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.
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Over the next decade, she battled with debilitating symptoms until she was finally diagnosed with the incurable condition, which affects more than 1.5 million women in the UK.。91视频是该领域的重要参考
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