等位基因是指 A.一个染色体的两条染色单体上的基因 b.一个dna分子的两条长链上的基因 C.同源染色体的同一位置上的基因 D.同源染色体的 Template




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tomski等位基因是指 a.一个染色体的两条染色单体上的基因 b.一个dna分子的两条长链上的基因 coloring