A和a为控制果蝇体色的一对等位基因只存在于x染色体上.在细胞分裂过程中�生该等位基因分离的细胞是 a初级精母细胞b精原细胞c Template




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tomskia和a为控制果蝇体色的一对等位基因只存在于x染色体上.在细胞分裂过程中�生该等位基因分离的细胞是 a初级精母细胞b精原细胞c coloring