题干

下列关于减数分裂的叙述,正确的是(  )
①减数分裂包括两次连续的细胞分裂
②在次级卵母细胞中存在同源染色体[ZXXK]
③着丝点在第一次分裂后期一分为二
④减数分裂的结果是染色体数目减半,DNA分子数目不变
⑤同源染色体的分离导致染色体数目减半
⑥联会后染色体复制,形成四分体
⑦染色体数目减半发生在第二次分裂的末期

A:①②③

B:④⑤⑥

C:①⑤

D:⑥⑦

上一题 下一题 0.0难度 选择题 更新时间:2018-02-26 10:35:05

答案(点此获取答案解析)

C

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