基因突变发生在(   ) A.DNA→RNA的过程中                

基因突变发生在(   )

A.DNA→RNA的过程中                 B. DNA→DNA的过程中

C.RNA→蛋白质的过程中               D.RNA→携带氨基酸的过程中

答案

B


解析:

基因突变是在DNA复制时,由于某种原因发生了差错而改变了基因的分子结构。A项是转录,B项为DNA复制过程,C项为翻译过程,D项是密码子与反密码子互补配对决定氨基酸顺序过程。

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