如果将含有1对同源染色体的精原细胞的2个dna分子都用15n标记并只供给精原细胞含14n的原料该细胞进行1次有丝分裂后再减数分裂1次产生 Template




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tomski如果将含有1对同源染色体的精原细胞的2个dna分子都用15n标记并只供给精原细胞含14n的原料该细胞进行1次有丝分裂后再减数分裂1次产生 coloring