men for women - Google News: Men Need X Chromosome To Make More Men (And Women) - Scientific American

men for women - Google News Google News

Men Need X Chromosome To Make More Men (And Women) - Scientific American Jul 30th 2013, 22:28 Men Need X Chromosome To Make More Men (And Women) Scientific American Men Need X Chromosome To Make More Men (And Women). Genomic analysis of the human X chromosome shows that it evolved to have responsibilities in sperm production. Sophie Bushwick reports.

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