如图是按顺时针方向表示的4种植物细胞的细胞周期,其中说法正确

如图是按顺时针方向表示的4种植物细胞的细胞周期,其中说法正确的是(  )

A.图中的b→a→b表示细胞增殖过程的一个细胞周期

B.甲图的b→a与丙图的b→a所用的时间可能一样长

C.从a→b,由于DNA的复制使染色体数目增加一倍

D.观察植物细胞有丝分裂的实验材料最好是选植物甲

答案

B


解析:

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