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【单选题】
下列有关基因突变的叙述,正确的是( )A.
高等生物中基因突变只发生在生殖细胞中
B.
基因突变必然引起个体表现型发生改变
C.
.环境中的某些物理因素可引起基因突变
D.
根细胞的基因突变是通过有性生殖传递的
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A.
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B.
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