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只生男不生女?到底是遗传还是有不为人知的秘密?
事实上,这就是所谓的性染色体和性别不匹配罢了,事实上,还有一种病叫 Klinefelter syndrome,意思是47染色体病,比如XXY,还有一种是XYY。但这些病,无法完全遗传,因为伟大的减数分裂会出现正常的精子。 03,统计学上极小概率 在开始之前,我们不妨为这个 ...
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