2020-2021学年高一生物北师大版必修二随堂检测（11）基因重组
※题型：单选题※知识点：单选题※试题难度：容易<br>基因重组通常发生在( )<br>A.减数分裂 B.受精作用 C.有丝分裂 D.细胞分化<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2021/9e751dbb76d14b6292602592416e7298/E7F0EDF83F40244C8F0C84B97471AED6.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>下列情况引起的变异属于基因重组的是( )<br>①非同源染色体上非等位基因的自由组合②基因型为DD的豌豆,种植在土壤贫瘠的地方出现矮茎性状,而下一代种植在水肥充足的地方,全表现为高茎③R型肺炎链球菌转化为S型肺炎链球菌的过程④DNA分子中发生碱基的替换、增添和缺失A.①② B.③④ C.①③ D.②④<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/ee8ef28775784fcfacc5d76b11d79152/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/93496061f0a64a61bc4f9ae76dd04814/D0268A07EAF826937728467DA97DC8AE.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列过程存在基因重组的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/1/2020/4/26/0250F24971D36915728001E2CB420B16.png"><br>B.<br><tbody><br>精卵<br>ab<br>AB<br>Ab<br>aB<br>ab<br>aabb<br>AaBb<br>Aabb<br>aaBb<br>AB<br>AaBb<br>AABB<br>AABb<br>AaBB<br>Ab<br>Aabb<br>AABb<br>AAbb<br>AaBb<br>aB<br>aaBb<br>AaBB<br>AaBb<br>aaBB<br></tbody><br>C.<img src="https://picture2.zhihuicn.com/testImage/1/2020/4/26/E8887C5F06333E393965EEF6B111D0A1.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/1/2020/4/26/E63FC0F71C968AF32F2F529145E0327E.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/42818dea6d984cbb97f25337e6c43fb2/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/ab89dcdba9b8423eb45d2b9d5e3d5c03/262E5F01752CE8093CA3AC39D3867169.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列细胞在其生命活动过程中既有可能发生基因重组现象,又有可能发生基因突变的是( )<br>A.细菌的增殖过程<br>B.造血干细胞产生红细胞的过程<br>C.精原细胞产生配子的过程<br>D.受精卵的卵裂过程<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/01df8a09ba18484bb87458b2916ebe0b/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/ad66aaf085da479aadb26feada99e88a/16E558C5AA4ED3FAAF35B055F5CE990D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列关于基因突变和基因重组的叙述,不正确的是()<br>A.基因突变和基因重组都是不定向的<br>B.在没有外来因素影响时,基因突变也会发生<br>C.基因型为Dd的个体自交后代出现3∶1的分离比,是基因重组的结果<br>D.基因中脱氧核苷酸的种类、数量和排列顺序的改变会导致基因突变<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2020/a35b61b91dbe49caae0c6ece2432e534/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2020/bd63bf80b97c4795a154960f88c7edc5/D08BE4191E15E93BFBE888E1AC0E9293.png"><br><br>
页:
[1]