人的卵细胞内有23条染色体,一个初级卵母细胞在减数第一次分裂前

人的卵细胞内有23条染色体,一个初级卵母细胞在减数第一次分裂前期生成的四分体数量及减数第一次分裂后期细胞内的染色体数、姐妹染色单体数依次是

A464623      B23460      C462346      D234692

答案

B

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