某一生物有四对染色体假设一个初级精母细胞在产生精子细胞的过程中其中一个 次级精母细胞在分裂后期有一对姐妹染色单体移�了同一极则这个初级精 Template




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tomski某一生物有四对染色体假设一个初级精母细胞在产生精子细胞的过程中其中一个 次级精母细胞在分裂后期有一对姐妹染色单体移�了同一极则这个初级精 coloring