下列有关变异的说法正确的是 A.染色体中dna的一个碱基缺失属于染色体结构变异 b.同源染色体上非姐妹染色单体之间的交叉互换属于基因重组 C Template




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tomski下列有关变异的说法正确的是 a.染色体中dna的一个碱基缺失属于染色体结构变异 b.同源染色体上非姐妹染色单体之间的交叉互换属于基因重组 coloring