减数分裂和有丝分裂重点知识列表梳理
<p>一 有丝分裂各时期细胞特征比较</p><table align="center" border="1" cellpadding="0" cellspacing="0" style="BORDER-BOTTOM: black 1px solid; BORDER-LEFT: black 1px solid; WIDTH: 410.1pt; BORDER-COLLAPSE: collapse; MARGIN-LEFT: 6.75pt; BORDER-TOP: black 1px solid; MARGIN-RIGHT: 6.75pt; BORDER-RIGHT: black 1px solid" width="547"><tbody><tr style="PAGE-BREAK-INSIDE: avoid; HEIGHT: 2.75pt"><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 2.75pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p align="center"><span style="FONT-FAMILY: 宋体">时期</span></p></td><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 2.75pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p align="center"><span style="FONT-FAMILY: 宋体">主要特征</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid; HEIGHT: 23.75pt"><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 23.75pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p align="center"><span style="FONT-FAMILY: 宋体">分裂</span></p><p align="center"><span style="FONT-FAMILY: 宋体">间期</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 23.75pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p><span style="FONT-FAMILY: 宋体">①细胞生长，体积增大</span></p><p><span style="FONT-FAMILY: 宋体">②DNA分子复制</span></p><p><span style="FONT-FAMILY: 宋体">③有关蛋白质合成</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 23.75pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p><span style="FONT-FAMILY: 宋体">G<sub>1</sub></span><span style="FONT-FAMILY: 宋体">期：RNA和蛋白质合成，为DNA分子复制做准备；</span></p><p><span style="FONT-FAMILY: 宋体">S</span><span style="FONT-FAMILY: 宋体">期：DNA分子复制；</span></p><p><span style="FONT-FAMILY: 宋体">G<sub>2</sub></span><span style="FONT-FAMILY: 宋体">期：RNA和蛋白质合成，为细胞分裂期做准备。</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid; HEIGHT: 22.95pt"><td rowspan="4" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 22.95pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p align="center"><span style="FONT-FAMILY: 宋体">分</span></p><p align="center"> </p><p align="center"><span style="FONT-FAMILY: 宋体">裂</span></p><p align="center"> </p><p align="center"><span style="FONT-FAMILY: 宋体">期</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 22.95pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p align="center"><span style="FONT-FAMILY: 宋体">前</span></p><p align="center"><span style="FONT-FAMILY: 宋体">期</span></p></td><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 22.95pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p><span style="FONT-FAMILY: 宋体">①两级发出纺锤丝，形成纺锤体</span></p><p><span style="FONT-FAMILY: 宋体">②染色质变为染色体，散布在纺锤体中央</span></p><p><span style="FONT-FAMILY: 宋体">③核膜、核仁消失</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid; HEIGHT: 28.4pt"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 28.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p align="center"><span style="FONT-FAMILY: 宋体">中</span></p><p align="center"><span style="FONT-FAMILY: 宋体">期</span></p></td><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 28.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p><span style="FONT-FAMILY: 宋体">①染色体的着丝点两侧连有纺锤丝</span></p><p><span style="FONT-FAMILY: 宋体">②染色体的着丝点排列在赤道板上</span></p><p><span style="FONT-FAMILY: 宋体">③染色体高度螺旋化，形态固定，数目清晰</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid; HEIGHT: 40.4pt"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 40.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p align="center"><span style="FONT-FAMILY: 宋体">后</span></p><p align="center"><span style="FONT-FAMILY: 宋体">期</span></p></td><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 40.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p><span style="FONT-FAMILY: 宋体">①着丝点分裂，形成两套完全相同的染色体</span></p><p><span style="FONT-FAMILY: 宋体">②纺锤丝收缩，两套染色体分别移向细胞两极</span></p><p><span style="FONT-FAMILY: 宋体">③细胞中的染色体数目加倍</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid; HEIGHT: 3.2pt"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 3.2pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p align="center"><span style="FONT-FAMILY: 宋体">末</span></p><p align="center"><span style="FONT-FAMILY: 宋体">期</span></p></td><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 3.2pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm"><p><span style="FONT-FAMILY: 宋体">①染色体变为染色质，纺锤体消失</span></p><p><span style="FONT-FAMILY: 宋体">②核膜、核仁重新形成</span></p><p><span style="FONT-FAMILY: 宋体">③赤道板位置形成细胞板，并扩展为细胞壁，形成两个子细胞</span></p></td></tr></tbody></table><p>二 动物细胞与植物细胞有丝分裂比</p><table border="1" cellpadding="0" cellspacing="0" style="border: 1px solid black; border-collapse: collapse; margin-left: 22.3pt; width: 384px;" width="513"><tbody><tr style="HEIGHT: 10.8pt"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 45pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.8pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="60"><p> </p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 65.95pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.8pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="88"><p><span style="FONT-FAMILY: 宋体">细胞类型</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 130.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.8pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="174"><p align="center"><span style="FONT-FAMILY: 宋体">动 物 细 胞</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 143.25pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.8pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="191"><p align="center"><span style="FONT-FAMILY: 宋体">植 物 细 胞</span></p></td></tr><tr style="HEIGHT: 22.65pt"><td rowspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 45pt; PADDING-RIGHT: 5.4pt; HEIGHT: 22.65pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="60"><p><span style="FONT-FAMILY: 宋体">不同点</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 65.95pt; PADDING-RIGHT: 5.4pt; HEIGHT: 22.65pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="88"><p><span style="FONT-FAMILY: 宋体">纺锤体的形成方式</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 130.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 22.65pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="174"><p><span style="FONT-FAMILY: 宋体">两组中心粒移向两极过程中发出星射线形成纺锤体</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 143.25pt; PADDING-RIGHT: 5.4pt; HEIGHT: 22.65pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="191"><p><span style="FONT-FAMILY: 宋体">两极发出纺锤丝形成纺锤体</span></p></td></tr><tr style="HEIGHT: 11.35pt"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 65.95pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.35pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="88"><p><span style="FONT-FAMILY: 宋体">细胞质的分裂方式</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 130.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.35pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="174"><p><span style="FONT-FAMILY: 宋体">由细胞膜从中部内陷将</span></p><p><span style="FONT-FAMILY: 宋体">细胞质缢裂为两部分的。</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 143.25pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.35pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="191"><p><span style="FONT-FAMILY: 宋体">由细胞板扩展为细胞壁将细胞质一分为二</span></p></td></tr><tr style="HEIGHT: 11.35pt"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 45pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.35pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="60"><p><span style="FONT-FAMILY: 宋体">相同点</span></p></td><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 339.95pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.35pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="453"><p><span style="FONT-FAMILY: 宋体">⑴间期、中期、后期变化相同；⑵在细胞周期中，染色体、DNA分子、染色单体的行为变化相同。染色体通过复制，平均分配到两个子细胞中。</span></p></td></tr></tbody></table><p>三 减数分裂各时期细胞特征比较</p><table border="1" cellpadding="0" cellspacing="0" style="BORDER-BOTTOM: black 1px solid; BORDER-LEFT: black 1px solid; WIDTH: 413.45pt; BORDER-COLLAPSE: collapse; BORDER-TOP: black 1px solid; BORDER-RIGHT: black 1px solid" width="551"><tbody><tr style="PAGE-BREAK-INSIDE: avoid"><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 68.45pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="91"><p align="center"><span style="FONT-FAMILY: 宋体">时期</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 345pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="460"><p align="center"><span style="FONT-FAMILY: 宋体">主要特征</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid; HEIGHT: 3.5pt"><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 68.45pt; PADDING-RIGHT: 5.4pt; HEIGHT: 3.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="91"><p align="center"><span style="FONT-FAMILY: 宋体">分裂间期</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 345pt; PADDING-RIGHT: 5.4pt; HEIGHT: 3.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="460"><p><span style="FONT-FAMILY: 宋体">①细胞体积增大；②染色体复制；</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid"><td rowspan="4" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 32.45pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="43"><p align="center"><span style="FONT-FAMILY: 宋体">减数第一次分裂</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 36pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="48"><p align="center"><span style="FONT-FAMILY: 宋体">前期</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 345pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="460"><p><span style="FONT-FAMILY: 宋体">①同源染色体联会、形成四分体；②四分体中非姐妹染色单体交叉互换</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 36pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="48"><p align="center"><span style="FONT-FAMILY: 宋体">中期</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 345pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="460"><p><span style="FONT-FAMILY: 宋体">①四分体排列在赤道板上；②着丝点一侧连有纺锤丝</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 36pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="48"><p align="center"><span style="FONT-FAMILY: 宋体">后期</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 345pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="460"><p><span style="FONT-FAMILY: 宋体">①同源染色体分离，②非同源染色体自由组合</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 36pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="48"><p align="center"><span style="FONT-FAMILY: 宋体">末期</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 345pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="460"><p><span style="FONT-FAMILY: 宋体">①染色体数目减半；②DNA数目减半</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid; HEIGHT: 14.25pt"><td rowspan="4" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 32.45pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="43"><p align="center"><span style="FONT-FAMILY: 宋体">减数第二次分裂</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 36pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="48"><p align="center"><span style="FONT-FAMILY: 宋体">前期</span></p></td><td rowspan="4" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 345pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="460"><p><span style="FONT-FAMILY: 宋体">除没有同源染色体外，其余细胞特征与有丝分裂相同。</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid; HEIGHT: 13.5pt"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 36pt; PADDING-RIGHT: 5.4pt; HEIGHT: 13.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="48"><p align="center"><span style="FONT-FAMILY: 宋体">中期</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid; HEIGHT: 12.75pt"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 36pt; PADDING-RIGHT: 5.4pt; HEIGHT: 12.75pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="48"><p align="center"><span style="FONT-FAMILY: 宋体">后期</span></p></td></tr><tr style="PAGE-BREAK-INSIDE: avoid; HEIGHT: 3pt"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 36pt; PADDING-RIGHT: 5.4pt; HEIGHT: 3pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="48"><p align="center"><span style="FONT-FAMILY: 宋体">末期</span></p></td></tr></tbody></table><p>四 精子形成与卵细胞形成过程比较</p><table align="center" border="1" cellpadding="0" cellspacing="0" style="BORDER-BOTTOM: black 1px solid; BORDER-LEFT: black 1px solid; BORDER-COLLAPSE: collapse; BORDER-TOP: black 1px solid; BORDER-RIGHT: black 1px solid"><tbody><tr><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 93.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="124"><p align="center"><span style="FONT-FAMILY: 宋体">配子</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 124.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="166"><p align="center"><span style="FONT-FAMILY: 宋体">精子</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 166.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="222"><p align="center"><span style="FONT-FAMILY: 宋体">卵子</span></p></td></tr><tr><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 93.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="124"><p align="center"><span style="FONT-FAMILY: 宋体">形成部位</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 124.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="166"><p align="center"><span style="FONT-FAMILY: 宋体">睾丸的曲细精管 </span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 166.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="222"><p align="center"><span style="FONT-FAMILY: 宋体">卵巢的卵泡 </span></p></td></tr><tr><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 93.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="124"><p align="center"><span style="FONT-FAMILY: 宋体">发生时期</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 124.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="166"><p align="center"><span style="FONT-FAMILY: 宋体">发情期到生殖机能衰退</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 166.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="222"><p align="center"><span style="FONT-FAMILY: 宋体">胎儿期；发情期到生殖机能衰退</span></p></td></tr><tr><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 93.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="124"><p align="center"><span style="FONT-FAMILY: 宋体">细胞质分裂</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 124.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="166"><p align="center"><span style="FONT-FAMILY: 宋体">均等分裂</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 166.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="222"><p align="center"><span style="FONT-FAMILY: 宋体">不均等分裂</span></p></td></tr><tr><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 93.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="124"><p align="center"><span style="FONT-FAMILY: 宋体">子细胞数目</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 124.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="166"><p align="center"><span style="FONT-FAMILY: 宋体">4 </span><span style="FONT-FAMILY: 宋体">个</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 166.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="222"><p align="center"><span style="FONT-FAMILY: 宋体">4 </span><span style="FONT-FAMILY: 宋体">个</span></p></td></tr><tr><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 93.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="124"><p align="center"><span style="FONT-FAMILY: 宋体">成熟子细胞数目</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 124.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="166"><p align="center"><span style="FONT-FAMILY: 宋体">4 </span><span style="FONT-FAMILY: 宋体">个</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 166.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="222"><p align="center"><span style="FONT-FAMILY: 宋体">1 </span><span style="FONT-FAMILY: 宋体">个</span></p></td></tr><tr><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 93.3pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="124"><p align="center"><span style="FONT-FAMILY: 宋体">是否变形 </span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 124.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="166"><p align="center"><span style="FONT-FAMILY: 宋体">变形</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 166.8pt; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="222"><p align="center"><span style="FONT-FAMILY: 宋体">不变形</span></p></td></tr></tbody></table><p>五 有丝分裂与减数分裂比较</p><table align="center" border="1" cellpadding="0" cellspacing="0" style="BORDER-BOTTOM: black 1px solid; BORDER-LEFT: black 1px solid; WIDTH: 423pt; BORDER-COLLAPSE: collapse; MARGIN-LEFT: -3.6pt; BORDER-TOP: black 1px solid; BORDER-RIGHT: black 1px solid" width="564"><tbody><tr style="HEIGHT: 11.25pt"><td colspan="3" rowspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p> </p></td><td rowspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">有丝分裂</span></p></td><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 216pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="288"><p align="center"><span style="FONT-FAMILY: 宋体">减 数 分 裂</span></p></td></tr><tr style="HEIGHT: 11.25pt"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">减数第一次分裂</span></p></td><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">减数第二次分裂</span></p></td></tr><tr style="HEIGHT: 11.25pt"><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p><span style="FONT-FAMILY: 宋体">发生部位</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">各组织器官</span></p></td><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 216pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="288"><p><span style="FONT-FAMILY: 宋体">动物：精巢、卵巢，植物：花药、胚囊</span></p></td></tr><tr style="HEIGHT: 11.25pt"><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p><span style="FONT-FAMILY: 宋体">发生时期</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">从受精卵开始</span></p></td><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 216pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="288"><p><span style="FONT-FAMILY: 宋体">性成熟后开始</span></p></td></tr><tr style="HEIGHT: 11.25pt"><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p><span style="FONT-FAMILY: 宋体">分裂起始细胞</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">体细胞</span></p></td><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 216pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.25pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="288"><p><span style="FONT-FAMILY: 宋体">原始的生殖细胞</span></p></td></tr><tr style="HEIGHT: 10.5pt"><td rowspan="4" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 30.3pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="40"><p><span style="FONT-FAMILY: 宋体">子细胞</span></p></td><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 68.7pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="92"><p><span style="FONT-FAMILY: 宋体">数目</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">2</span><span style="FONT-FAMILY: 宋体">个</span></p></td><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 216pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="288"><p><span style="FONT-FAMILY: 宋体">4</span><span style="FONT-FAMILY: 宋体">个</span></p></td></tr><tr style="HEIGHT: 10.5pt"><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 68.7pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="92"><p><span style="FONT-FAMILY: 宋体">类型</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">体细胞</span></p></td><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 216pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="288"><p><span style="FONT-FAMILY: 宋体">配子</span></p></td></tr><tr style="HEIGHT: 10.5pt"><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 68.7pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="92"><p><span style="FONT-FAMILY: 宋体">染色体数</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">与亲代细胞相同</span></p></td><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 216pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="288"><p><span style="FONT-FAMILY: 宋体">比亲代细胞减半</span></p></td></tr><tr style="HEIGHT: 10.5pt"><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 68.7pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="92"><p><span style="FONT-FAMILY: 宋体">染色体组成</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">完全相同</span></p></td><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 216pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="288"><p><span style="FONT-FAMILY: 宋体">不一定相同</span></p></td></tr><tr style="HEIGHT: 10.5pt"><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p><span style="FONT-FAMILY: 宋体">细胞分裂次数</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">一次</span></p></td><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 216pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.5pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="288"><p><span style="FONT-FAMILY: 宋体">两次</span></p></td></tr><tr style="HEIGHT: 15.2pt"><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 15.2pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p><span style="FONT-FAMILY: 宋体">染色体复制次数</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 15.2pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">一次</span></p></td><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 216pt; PADDING-RIGHT: 5.4pt; HEIGHT: 15.2pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="288"><p><span style="FONT-FAMILY: 宋体">一次</span></p></td></tr><tr style="HEIGHT: 16.65pt"><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 16.65pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p><span style="FONT-FAMILY: 宋体">细胞周期</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 16.65pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">有</span></p></td><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 216pt; PADDING-RIGHT: 5.4pt; HEIGHT: 16.65pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="288"><p><span style="FONT-FAMILY: 宋体">无</span></p></td></tr><tr style="HEIGHT: 11.3pt"><td colspan="2" rowspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 36pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.3pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="48"><p><span style="FONT-FAMILY: 宋体">同源染色体</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 63pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.3pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="84"><p><span style="FONT-FAMILY: 宋体">有无</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.3pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">有</span></p></td><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 117pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.3pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="156"><p><span style="FONT-FAMILY: 宋体">有</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 11.3pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p><span style="FONT-FAMILY: 宋体">无</span></p></td></tr><tr style="HEIGHT: 10.75pt"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 63pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.75pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="84"><p><span style="FONT-FAMILY: 宋体">行</span></p><p><span style="FONT-FAMILY: 宋体">为</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.75pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">无联会等</span></p></td><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 117pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.75pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="156"><p><span style="FONT-FAMILY: 宋体">有联会、四分体，同源染色体分离，非同源染色体自由组合</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.75pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p><span style="FONT-FAMILY: 宋体">无</span></p><p> </p></td></tr><tr style="HEIGHT: 14.95pt"><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.95pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p><span style="FONT-FAMILY: 宋体">中期赤道板位置的变化</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.95pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">着丝点排在赤道板上，两侧连纺锤丝</span></p></td><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 117pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.95pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="156"><p><span style="FONT-FAMILY: 宋体">四分体排在赤道板上，一侧连纺锤丝</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.95pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p><span style="FONT-FAMILY: 宋体">着丝点排在赤道板上，两侧连纺锤丝</span></p></td></tr><tr style="HEIGHT: 14.95pt"><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.95pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p><span style="FONT-FAMILY: 宋体">后期着丝点变化及其染色单体行为</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 108pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.95pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="144"><p><span style="FONT-FAMILY: 宋体">着丝点一分为二，染色单体变成子染色体，两者分离</span></p></td><td colspan="2" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 117pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.95pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="156"><p><span style="FONT-FAMILY: 宋体">着丝点不分裂，同源染色体分离</span></p></td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.95pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p><span style="FONT-FAMILY: 宋体">着丝点一分为二，染色单体变成子染色体，两者分离</span></p></td></tr><tr style="HEIGHT: 14.95pt"><td colspan="3" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 99pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.95pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="132"><p><span style="FONT-FAMILY: 宋体">联 系</span></p></td><td colspan="4" style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; WIDTH: 324pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.95pt; BORDER-TOP: medium none; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" valign="top" width="432"><p><span style="FONT-FAMILY: 宋体">减数分裂是一种特殊方式的有丝分裂</span></p></td></tr></tbody></table>
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