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生男生女决定权在哪方

更新时间: 2020-09-17 00:00:00     

人的性别是由生殖细胞中的性染色体所决定的,性染色包括xy,女性的染色体是xx,男性的是xy,根据遗传的特性,小孩的性别决定在男方。

关键词: 男生 决定权

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