基因突变可以�生在生物个体�育的任何时期这说明 A.基因突变是随机�生的 B.基因突变是不定�的 C.基因突变的�率是很低的 D.基因突变是 Template




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tomski基因突变可以�生在生物个体�育的任何时期这说明 a.基因突变是随机�生的 b.基因突变是不定�的 coloring