下图1中,ab表示一个细胞周期,cd表示另一个细胞周期。图2中,按箭

下图1中,ab表示一个细胞周期,cd表示另一个细胞周期。图2中,按箭头方向,

表示细胞周期。从图中所示结果分析其细胞周期,不正确的是    

A.图1的中a、图2B→A细胞正在进行DNA复制

B.图1的中b、图2A→B时的细胞会出现染色体数目加倍的时期

C.根据在细胞周期中阻断DNA复制的原理,可以控制癌细胞的增殖

D.图1、图2中会发生同源染色体的分离,非同源染色体的自由组合

答案

D

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