Now, three researchers at the University of Pennsylvania, Alexander Platt, Daniel N. Harris, and Sarah Tishkoff, have done the converse analysis: examining the X chromosomes of the handful of completed Neanderthal genomes we have. It turns out there's also a strong bias toward modern human sequences there, as well, and the authors interpret that as selective mating, with Neanderthal males showing a strong preference for modern human females and their descendants.
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Elahi, the UK's deputy government chemist, who is based at the measurement and testing services company LGC, couldn't believe that food fraudsters would target children.，推荐阅读51吃瓜获取更多信息
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