Question

directions: select each correct answer. more than one answer may be correct.
which of the following can cause a mutation in a gene?
insertion of dna deletion of dna substitution of dna
reset submit

Explanation:

基因（gene）是具有遗传效应的DNA片段。插入（insertion）、缺失（deletion）和替换（substitution）DNA都会改变基因的碱基序列，从而导致基因突变。

Answer:

insertion of DNA, deletion of DNA, substitution of DNA