题干

如图表示野生型链孢霉几个基因的表达过程,下列据图做出的推断正确的是(    )

A:核膜的存在使图中基因的转录和翻译在不同的区域进行

B:遗传信息的复制和表达都是以基因为单位进行的

C:该图能说明基因和染色体行为存在明显的平行关系

D:野生型链孢霉经X射线处理后在缺少精氨酸的培养基上不能生长,则一定是基因4发生了突变

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答案(点此获取答案解析)

A

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