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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.。一键获取谷歌浏览器下载对此有专业解读
“If there are three of you in the group, a response, if only an emoji, is almost expected,” Wesson said. “In group of 50 or more it is practically a criminal offense.”