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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Detecting genetic drift versus selection in human evolution.
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Detecting genetic drift versus selection in human evolution.

机译:在人类进化中检测遗传漂移与选择。

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摘要

Recent paleoanthropological discoveries reveal a diverse, potentially speciose human fossil record. Such extensive morphological diversity results from the action of divergent evolutionary forces on an evolving lineage. Here, we apply quantitative evolutionary theory to test whether random evolutionary processes alone can explain the morphological diversity seen among fossil australopith and early Homo crania from the Plio-Pleistocene. We show that although selection may have played an important role in diversifying hominin facial morphology in the late Pliocene, this is not the case during the early evolution of the genus Homo, where genetic drift was probably the primary force responsible for facial diversification.
机译:最近的古人类学发现揭示了各种各样的,可能是特殊的人类化石记录。如此广泛的形态多样性是由于发散的进化力对进化世系的作用所致。在这里,我们应用定量进化论来检验随机进化过程是否能解释从上新世到上古化石的奥氏古猿和早期的cr人之间的形态多样性。我们表明,尽管在上新世晚期选择可能在人参面部形态多样化中发挥了重要作用,但在同源人的早期进化过程中情况并非如此,因为遗传漂移可能是造成面部多样化的主要力量。

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