2021届高考生物一轮复习遗传的基本规律专项训练（4）9:3:3:1和1:1:1:1的变式类型
※题型：单选题※知识点：单选题※试题难度：较易<br>在下列各杂交组合中,后代表现型比为1:1:1:1的亲本组合是( )<br>A.EeFf×EeFf B.EeFf×Eeff C.Eeff×eeFf D.EEFf×eeff<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2012/4db5cadab08344feba998c8bfd57a9a5/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2012/7d47f3fc1f1c4c41a2211d0d78c39602/A71D010B4D71F56DB1D0C9432692D600.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>某种哺乳动物的直毛(B)对卷毛(b)为显性,黑色(C)对白色(c)为显性(这两对基因分离和组合互不干扰)。基因型为BbCc的个体与“个体X”交配,子代的表现型及比例是:直毛黑色:卷毛黑色:直毛白色:卷毛白色=3:3:1:1.“个体X”的基因型为( )<br>A.BbCC B.BbCc C.bbCc D.Bbcc<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2018/3c45d11669344e27b3fae20813975971/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2018/5f89030028ab498c9844612b55c38fca/AABC4865743F4E0440B28C6F095D136F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>已知某生物个体经减数分裂产生的四种配子为Ab:aB:AB:ab=3:3:l:l,该生物自交,其后代出现显性纯合体的可能性为( )<br>A.1/16 B.1/64 C.1/32 D.1/100<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2010/63607a005ebd47b885f92301144ddae6/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2010/feaea91c22da4b3ea15c0141686f7d5e/9E16E0331962768C9497F9CB88233D2E.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>以抗螟非糯性水稻(GGHH)与不抗螟糯性水稻(gghh)为亲本杂交得<img,<img自交得<img,<img的性状分离比为9:3:3:1,则<img中两对基因在染色体上的位置关系是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/1/2015/11/20/950310F1723066A7CC2F7B3993E75FF0.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/1/2015/11/20/14DD13B2F0C3B309F27902E0C0C5E4D5.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/1/2015/11/20/1C7C7F239905E8DA5120B404DA06B58D.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/1/2015/11/20/6E77D06DB3C57CD97D8559762ABE79FE.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2015/60e71e64b1814895abe4e75b5b8ccf12/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2015/07389066484e497a8ebb7a47b1825fc8/9C6AD5419DC9FA379EE5854C11A26A73.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>某雌雄异株植物的红花与白花、宽叶与窄叶分别由两对等位基因A/a、B/b控制,且存在某种隐性基因导致花粉致死现象。将表现型相同的亲本杂交得到F<sub>1</sub>,F<sub>1</sub>随机授粉得到F<sub>2</sub>表现型及比例如下表。<br><tbody><br>红花宽叶<br>红花窄叶<br>白花宽叶<br>白花窄叶<br>雌性<br>30/96<br>0<br>2/96<br>0<br>雄性<br>45/96<br>15/96<br>3/96<br>1/96<br></tbody><br>下列叙述正确的是( )<br>A.亲本的基因型为AaX<sup>B</sup>Y、AAX<sup>B</sup>X<sup>b</sup><br>B.控制花色的基因位于X染色体<br>C.F<sub>2</sub>宽叶雌株与窄叶雄株杂交,后代中宽叶♂:窄叶♂:宽叶♀:窄叶♀=7:1:7:1<br>D.F<sub>2</sub>红花雌株与红花雄株杂交,后代中红花♂:白花♂:红花♀:白花♀=24:1:24:1<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/fec5fc448b004f1b8999f494c3b98c9a/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>果蝇的长翅(A)对残翅(a)为显性,直翅(B)对弯翅(b)为显性,有刺刚毛(D)对无刺刚毛(d)为显性,控制这3对性状的基因均位于常染色体上。基因型为AaBbDd的两果蝇进行多次杂交,后代的表现型及比例为长翅直翅有刺刚毛:长翅直翅无刺刚毛:残翅弯翅有刺刚毛:残翅弯翅无刺刚毛=9:3:3:1.下列叙述不正确的是( )<br>A.三对等位基因均遵循自由组合定律<br>B.A、a和B,b两对基因位于一对同源染色体上<br>C.基因型为AaBbDd的果蝇能产生四种配子<br>D.基因型为AaBbDd的果蝇与残翅弯翅无刺刚毛果蝇杂交,后代性状分离比是1:1:1:1<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/1c3e19aa334a4187b1abd424eca5dd18/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/d6b29a2034824f2e845d9c6e8538219e/A0E27C8D1893237234429E1C381CBC9D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>黄色圆粒豌豆与绿色皱粒豌豆杂交得到的F<sub>1</sub>再自交,F<sub>2</sub>的表现型及比例为黄圆:黄皱:绿圆:绿皱=9:15:15:25。则亲本的基因型为( )<br>A.YYRR、yyrr B.YyRr、yyrr C.YyRR、yyrr D.YYRr、yyrr<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2015/e6e1a10bc2ed4941a8eaf43e0f34a568/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2015/c5809b1ef6c84ea794752d96ce601cec/87F51F88B92C5C11108F2117793212C9.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>现有纯合残翅红眼雌果蝇与长翅白眼雄果蝇杂交,F<sub>1</sub>全部表现为长翅红眼,F<sub>1</sub>雌、雄果蝇自由交配,F<sub>2</sub>中表现型及比例为长翅红眼(♀):长翅红眼(♂):长翅白眼(♂):残翅红眼(♀):残翅红眼(♂):残翅白眼(♂)=6:3:3:2:1:1。下列有关叙述错误的是( )<br>A.控制翅形的基因位于常染色体上<br>B.控制翅形和眼色的基因不能通过染色体相应部分的交叉互换完成基因重组<br>C.F<sub>2</sub>长翅白眼(♂)个体中,纯合子所占的比例为1/3<br>D.F<sub>2</sub>中长翅红眼(♀)与残翅白眼(♂)杂交产生的后代中,残翅白眼所占的比例为1/6<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/ba7bb5d0033f4e9d964e92f3869aede5/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/c6514cbd35f948f2851a5f09cf145837/356CE671E3FEF2A7E82F34A1A9C4130F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>现有甲、乙两种玉米植株,高秆对矮秆为显性,用基因A和a表示,抗病对不抗病为显性,用基因B和b表示,这两对等位基因独立遗传。甲、乙杂交得到F<sub>1</sub>,F<sub>1</sub>自交产生的F<sub>2</sub>表现型和比例为高秆抗病:矮秆抗病:高秆不抗病:矮秆不抗病=9:15:15:25,则甲与乙两植株的基因型可能为( )<br>A.AaBb×aabb B.AABb×AaBb C.aaBb×AaBb D.AaBb×Aabb<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/bb327d712f144db9a47ba7cdb67dfe40/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/71802bf4402e4b1583505ac9189a7b9c/4D36E7C058F1836AF1D8D75C677870F2.png"><br><br>
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