首页 › 专项卷 › 盱眙县都梁中学2020-2021学年高一第二学期第一次学情检测生物试卷

admins 发表于 2021-8-20 23:46:33

盱眙县都梁中学2020-2021学年高一第二学期第一次学情检测生物试卷

※题型：单选题※知识点：单选题※试题难度：较易<br>基因的分离定律和自由组合定律的提出者是(&nbsp;&nbsp;)<br>A.沃森和克里克&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.孟德尔<br>C.达尔文&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.摩尔根<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2018/385e21dc32d8498e94257bd1f46edfe5/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>与一般的有丝分裂相比,减数分裂过程中染色体变化最显著的特征是(&nbsp;)<br>A.染色体进行复制&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.同源染色体联会和分离<br>C.有纺锤体的形成&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.有着丝粒的分裂<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/2bc948fdcf094b68a5a39945b8bfcedc/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下图是某二倍体生物细胞分裂中的一个时期示意图,该细胞的名称是(&nbsp;)<imgA.初级卵母细胞&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.卵原细胞<br>C.次级卵母细胞&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.初级精母细胞<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/85296477814a4cba93bd71856a7cc4fe/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>减数分裂和受精作用对生物的生殖、遗传和变异有着重要作用。下列叙述错误的是(&nbsp;)<br>A.减数分裂过程中染色体复制两次<br>B.受精作用与精子和卵细胞的相互识别有关<br>C.受精卵中染色体只有一半来自卵细胞<br>D.受精卵中的染色体数与本物种体细胞中的染色体数一致<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/a28a6e350f5a42a6b60c2ebf678bacc2/C6DD893B0461FAD877175A7ECBBD5939.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>与精子形成过程相比,卵细胞形成过程特有的是(&nbsp;)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A.同源染色体联会<br>B.染色体复制一次,细胞连续分裂两次<br>C.初级卵母细胞的细胞质不均等分配<br>D.生殖细胞中染色体数目减半<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/6b598151536e4cecbd94e349831da427/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：困难<br>南瓜的果实中,白色与黄色、盘状与球状两对性状独立遗传。现有纯合白色球状品种与纯合黄色盘状品种杂交得到F₁,再用F₁自交得到F₂,实验结果见下表。其中表现型丁为(&nbsp;&nbsp;)<br><tbody><br>P<br>白色球状×黄色盘状<br>F₁<br>白色盘状<br>F₂表现型及其数量比例<br>甲<br>乙<br>丙<br>丁<br>9<br>3<br>3<br>1<br></tbody><br>A.白色盘状&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.黄色盘状&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.白色球状&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.黄色球状<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2014/7ce23e6bfd81435f922cf11fc9908efe/2BB966A0E0D0EF1A330D14E3ADEDA5C5.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2014/6ec38884007540d3ac81252ee3ab9235/4C4F8AEF9E8C40837B8B38FD001D0413.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>基因型为DdTt的个体与DDTt个体杂交,按自由组合规律遗传,子代基因型有(&nbsp;&nbsp;)<br>A.2种&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.4种&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.6种&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.8种<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/96d2f4d2aa164da8835d7d73a89b2852/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>基因型为YYRr的个体产生的配子是(&nbsp;&nbsp;)<br>A.YR和YR&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.Yr和Yr&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.YY和Rr&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.Yr和YR<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/0f01c4b8bfcf498f9a31a4f667311679/2BB966A0E0D0EF1A330D14E3ADEDA5C5.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/d8afef3172994b08803efbb751f16701/298351A80731F4D7AB17F504002823C3.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>某植物果实的颜色由常染色体上一对等位基因A、a控制(某种基因型的果实不能正常发育),下表是关于该植物果实颜色的3个杂交实验及其结果。下列分析正确的是(&nbsp;)<br><tbody><br>实验<br>亲本表现型<br>F₁的表现型和植株数目<br>红果<br>黄果<br>一<br>红果×黄果<br>492<br>504<br>二<br>黄果×黄果<br>0<br>997<br>三<br>红果×红果<br>1511<br>508<br></tbody><br>A.果实颜色中,黄色为显性性状<br>B.该实验表明果实颜色的遗传遵循基因自由组合定律<br>C.实验中的红果均为杂合子<br>D.实验三中F₁红果的基因型可能是AA或Aa<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/cee5f640b18e496aab3759fb6988dd25/2BB966A0E0D0EF1A330D14E3ADEDA5C5.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>下面叙述所描写的一定是同源染色体的为(&nbsp;&nbsp;&nbsp;)<br>A.一条染色体复制形成的两条染色体<br>B.分别来自父亲和母亲的两条染色体<br>C.形态特征大体相同的两条染色体<br>D.减数分裂过程中联会的两条染色体<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2019/193b2968491f487e9651dc27843c14f7/2BB966A0E0D0EF1A330D14E3ADEDA5C5.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>杂合紫花豌豆自交后代同时出现紫花和白花,这种现象在遗传学上称为(&nbsp;&nbsp;)<br>A.表现型&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.基因型&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.性状分离&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.伴性遗传<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2015/b0f94b87e02044f584cbc2859e74ffab/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2015/4921093235674003af08f61a7aefa007/1E6047C02DC1D5E657022CB29CADC250.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>下列各组中不属于相对性状的是(&nbsp;&nbsp;&nbsp;)<br>A.水稻的早熟和晚熟&nbsp;<br>B.豌豆的紫花和红花<br>C.小麦的抗病和易感染疾病&nbsp;&nbsp;&nbsp;&nbsp;<br>D.绵羊的长毛和细毛<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2019/6b429a94c77b4c4ea558f0d6a0d006d1/2BB966A0E0D0EF1A330D14E3ADEDA5C5.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2019/d97d49aa2ab24df59b50b5e525ff3a34/4DA21CB18D2401A571ED6380AAF002F8.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>下图中最能明显表示出基因分离定律的是(&nbsp;)<br>A.<img src="https://picture2.zhihuicn.com/testImage/1/2021/4/12/39C7641D608465855FE5877FCDF5FEC6.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/1/2021/4/12/EC66712EA2CEA9E53F3A23AE154EBCBC.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/1/2021/4/12/36CEEC5D95C631A8F43E919D12FD034B.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/1/2021/4/12/E91BCE9A3AD312533650314167C66013.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/c1ad4085ebcc41738d67050d9075bf17/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：容易<br>减数第二次分裂的主要特征是(&nbsp;)<br>A.染色体复制&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.着丝点分裂<br>C.同源染色体配对&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.同源染色体分离<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/0b9a2b614e0347cd9d754505c570abaf/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>基因的自由组合发生在(&nbsp;&nbsp;&nbsp;)<br>A.有丝分裂后期&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.四分体时期<br>C.减数第一次分裂&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.减数第二次分裂<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2012/a52ea23a97624c4bb529da029248b83d/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：容易<br>根据基因的自由组合定律,在正常情况下,基因型为YyRr的豌豆不能产生的配子是(&nbsp;&nbsp;)<br>A.YR&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.Yr&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.yR&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.YY<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2012/387a9b9d932b4a9bbe29902bd9af141a/2BB966A0E0D0EF1A330D14E3ADEDA5C5.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2012/423bb7560b434391bbac659425725e7b/99C9CEB82DC7708FFE43B0B7992BA757.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>孟德尔对分离现象的原因提出了假说,下列不属于该假说内容的是(&nbsp;&nbsp;&nbsp;)<br>A.生物的性状是由遗传因子决定的<br>B.受精时雌雄配子的结合是随机的<br>C.基因在体细胞中成对存在<br>D.配子只含每对遗传因子中的一个<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2019/60479ca4252f48dd87996f124ab49ac5/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2019/774c01b74e724644a55c65e4326682ce/CC681BFF5A5B3B6CE9658CE0EC184C3A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列为某二倍体植物细胞处于不同分裂时期的示意图,其中属于减数第二次分裂后期的(&nbsp;&nbsp;)<br>A.<img src="https://picture2.zhihuicn.com/testImage/1/2013/5/29/2E837468CE84C734F4C9D71546FB59B1.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/1/2013/5/29/31608D6C568356B278E0DCD3881EF926.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/1/2013/5/29/9F31BBB6C3745995FF78627C42BBF052.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/1/2013/5/29/22CBEB3E058794626DB485A1378C0984.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2013/d92cf48c2b5949c792210d234c153e69/C6DD893B0461FAD877175A7ECBBD5939.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2013/634b101d547646f3b28fb20801fdc47c/583A1EFA932CBD8450D9F4E2CD2A2853.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>维持生物前后代体细胞中染色体数目恒定的重要过程是(&nbsp;&nbsp;)<br>A.遗传和变异&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.无丝分裂和有丝分裂<br>C.减数分裂和有丝分裂&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.减数分裂和受精作用<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2014/2c80c0104918425589c8354a32c99cd7/2BB966A0E0D0EF1A330D14E3ADEDA5C5.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2014/59af940932c849baaa734054a7ae5930/77B87DCCDCCCCA937F9E3137C8F906B7.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>家兔的黑毛对褐毛是显性,要判断一只黑毛兔是否是纯合子,选用与它交配的兔最好是(&nbsp;)<br>A.纯种黑毛兔&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.褐毛兔&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.杂种黑毛兔&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.ABC都不对<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/7395f571731847b99d2892e0091a33ab/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>减数分裂中染色体数目减半的原因是(&nbsp;)<br>A.减数第一次分裂中同源染色体的联会<br>B.减数第一次分裂中同源染色体的分离<br>C.减数第二次分裂中着丝点的分裂<br>D.减数第二次分裂中染色单体的分离<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/8027453f8e394f2c926d686c3bbc3b18/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：容易<br>下列基因型表示杂合子的是(&nbsp;)<br>A.AAbb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.AABB&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.AABb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.aabb<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/6fb8cdee65074004996d646d064693b4/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列对一个“四分体”的描述不正确的是(&nbsp;&nbsp;)<br>A.含有4个DNA分子<br>B.含有一对同源染色体<br>C.四分体中的姐妹染色单体之间可发生交叉互换<br>D.四分体的形成与DNA分子的复制有关<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2014/372552a72af04c37ba997b7d42e03395/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2014/f59e4fb948754934a99f583a96139141/395406093982E7B90909642EB3506A20.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>下列基因型中,具有相同表现型的是(&nbsp;&nbsp;)<br>A.AABB和AaBB&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.AABb和Aabb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.AaBb和aaBb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.AAbb和aaBb<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2019/0c19ffb68a0944fda9bf85c62bd16947/C6DD893B0461FAD877175A7ECBBD5939.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列交配组合属于测交的是(&nbsp;)<br>A.Gg×gg&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.Gg×Gg&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.gg×gg&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.GG×gg<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/ca563224f5fc4a2694b5ed0b60b206fd/C6DD893B0461FAD877175A7ECBBD5939.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>孟德尔用纯种黄色圆粒豌豆和纯种绿色皱粒豌豆进行杂交实验,产生的F₁是黄色圆粒。将F₁自交得到F₂,F₂的表现型分别为黄色圆粒、黄色皱粒、绿色圆粒、绿色皱粒,它们之间的数量比是(&nbsp;)<br>A.1:1:1:1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.3:1:3:1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.3:3:1:1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.9:3:3:1<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2011/8a7aade544c64e3683ea9fe33645c88e/2BB966A0E0D0EF1A330D14E3ADEDA5C5.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2011/ca6c37bd65214e8abfd3140cbca24971/2DCAD80CEE18DA0887DFDE75B5F5D099.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>下图为基因型为AaBb的生物自交产生后代的过程,基因的自由组合定律发生于(&nbsp;&nbsp;&nbsp;)<img A.①&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.②&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.③&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.④<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2012/4c1906d5c8664ea484324294a4b7ebd0/C6DD893B0461FAD877175A7ECBBD5939.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2012/baddbf21e5df47f198008e65e4cb5f92/1DFA5ABE534D66E686D49FE02B4F238F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>基因型为AaBb、aaBb的两个体杂交(两对基因满足自由组合定律),后代中纯合体占总数的(&nbsp;&nbsp;)<br>A.1/4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.3/4<br>C.1/2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.2/3<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/c49506d55aca40319b19d2bb3ab4bc6a/C6DD893B0461FAD877175A7ECBBD5939.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列是某种雄性动物睾丸内正在分裂的四个细胞示意图,其中属于次级精母细胞的是(&nbsp;&nbsp;)<br>A.<img src="https://picture2.zhihuicn.com/testImage/1/2019/6/10/EEE48546402F0C8BC5F45AECE020852D.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/1/2019/6/10/8043A10F1F31321035EE721ABCB932E9.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/1/2019/6/10/8B12DB0B3E97D58C823617CF98B8A5A8.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/1/2019/6/10/124D34854C29A164A24C558EBB90E35A.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2019/4b6971d86ae04737a8d7dff69352ca92/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2019/dedd1d03623f4e149c3880f9151808c4/3C33EAFB16271022A2F510FEA05CB858.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>要判断一株高茎豌豆是否为纯合子,最简便的方法是(&nbsp;&nbsp;)<br>A.测交&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.自交<br>C.与杂合高茎杂交&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.与纯合高茎杂交<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/699c5dad29634abe83ae5ecd3a7101f8/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>孟德尔的两对相对性状的遗传实验中,符合1:1:1:1比例的是(&nbsp;&nbsp;)<br>①F₁产生配子类型的比例②F₂表现型的比例③F₁测交后代基因型的比例④F₁表现型的比例⑤F₂基因型的比例A.②④&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.①③&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.④⑤&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.②⑤<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/f3f8db0bbaba4b839f76fc366d1f7cee/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br>略<br>※题型：填空题※知识点：填空题※试题难度：中等<br>如图<br>个细胞是某雄性动物体内不同细胞分裂示意图(假设该生物的体细胞只有<br>条染色体),请回答以下问题:<br>&nbsp;<br><img1.图中属于减数分裂的有(填字母)。2.A细胞中有条染色体。3.具有同源染色体的细胞有。4.不具有姐妹染色单体的细胞有。5.D产生的子细胞的名称是。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/72fa16ad837844728f01df030546173d/5F245807EAFB8230AA7FD19A747BA6A3.png"><br>解析<br>略<br>※题型：实验题※知识点：实验题※试题难度：中等<br>已知豌豆种子子叶的黄色与绿色由一对等位基因<br>Y<br>、<br>y<br>控制。现用甲、乙、丙三个品种的豌豆进行如下实验。<br><tbody><br>实验组别<br>亲本的处理方法<br>F<br><br>&nbsp;<br>所结种子的性状及数量<br>黄色子叶<br>绿色子叶<br>实验<br>一<br>黄色子叶(甲)<br>×<br>绿色子叶(乙)<br>409<br>粒<br>410<br>粒<br>实验二<br>黄色子叶(丙)自交<br>297<br>粒<br>101<br>粒<br></tbody><br>1.从实验可判断这对相对性状中是显性性状。2.实验二中F₁所结的黄色子叶种子中纯合子的理论值为粒。3.实验一中F₁黄色子叶植株与实验二中F₁黄色子叶植株杂交,所获得的子代个体中不能稳定遗传的占。4.以上遗传现象遵循定律。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/71574ddbea5e4b49ace544ac6d8b1551/F9408FA2FBF8B9CDC11F74B6927BA2B0.png"><br>解析<br>略<br>※题型：实验题※知识点：实验题※试题难度：中等<br>在香水玫瑰的花色遗传中,红花、黄花为一对相对性状,受一对等位基因的控制(用基因<br>A<br>、<br>a<br>表示)。研究者做以下杂交实验,结果如下图所示,请问:<br><tbody><br>杂交组合<br>后代性状<br>一<br>红花<br>A×<br>黄花<br>B<br>全为红花<br>二<br>红花<br>C×<br>黄花<br>D<br>红花与黄花比为<br>1:<br></tbody><br>1.从实验可判断这对相对性状中是显性性状。2.实验一中的红花A与实验二中红花C基因型(填相同或不同)。3.实验一后代红花中能够稳定遗传的占。4.实验二后代中出现红花与黄花的比例为1:1,其中主要原因是红花C出现的配子种类及其比例为。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/6a65b1d9c3ce47729338d917eb890ff5/9127E51D0A37B6F7B88C5ED7382A8350.png"><br>解析<br>略<br>

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