如图是染色体数为2m核dna数为2n的某动物精原细胞分裂的示意图两对基因aa和bb分别在两对同源染色体上.��表示细胞处于染色体着丝点 Template




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tomski如图是染色体数为2m核dna数为2n的某动物精原细胞分裂的示意图两对基因aa和bb分别在两对同源染色体上.��表示细胞处于染色体着丝点 coloring