77.右图是减数分裂的染色体染色单体dna分子数目变化图下列叙述正确的是 A.a表示dna分子数 B.c表示染色体数 C.b表示染色单体数 Template




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tomski77.右图是减数分裂的染色体染色单体dna分子数目变化图下列叙述正确的是 a.a表示dna分子数 b.c表示染色体数 coloring