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Not every modern human has the same set of Neanderthal DNA, however; different people will, by chance, have inherited different fragments. But there are also some areas, termed "Neanderthal deserts," where none of the Neanderthal DNA seems to have persisted. Notably, the largest Neanderthal desert is the entire X chromosome, raising questions about whether this reflects the evolutionary fitness of genes there or mating preferences.，推荐阅读旺商聊官方下载获取更多信息
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从9月开学，到11月这2个月，一直在帮助她适应集体生活，也坚持送往幼儿园，没有缺席过一次。
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