下图所示是某植物根尖分生区细胞分裂的示意图其中y和y表示基因造成l号和2号染色单体上基因不同的原因是a.染色体复制时�生了基因突变b.1号 Template




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tomski下图所示是某植物根尖分生区细胞分裂的示意图其中y和y表示基因造成l号和2号染色单体上基因不同的原因是a.染色体复制时�生了基因突变b.1号 coloring