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关于精子,下述哪一项是错误的

A、曲精小管内的精子能运动,具有受精能力

B、由精子细胞变态形成

C、从精原细胞到精子形成过程,约需64天

D、青春期开始,睾丸中随时都有精子成熟

E、其染色体为x或y

时间：2021-07-17 23:16 关键词：护理学专升本组织胚胎学期末成绩低于60分期末考试

答案解析

A

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