题目内容

M因子在细胞周期中哪个时期起作用

A. G1
B. G2
C. M
D. S

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细胞周期检测点有哪些

A. 未复制DNA检测点
B. 纺锤体组装检测点
C. 染色体分离检测点
DNA损伤检测点

哪些因素对细胞周期调控有影响

Lots of people can speak more than one language. My best friend,, can speak English and Spanish.

A. New
B. school
C. for example
D. indeed

But if I live on the border to Mexico, I would be able to speak English and Spanish, too.

A. maybe
B. always
C. never
D. certainly