Rejection of a serial founder effects model of genetic and linguistic coevolution
Rejection of a serial founder effects model of genetic and linguistic coevolution
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DOI：
10.1098/rspb.2011.2296
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发表时间：
2012-06-07
影响因子：
4.7
通讯作者：
Healy, Meghan
中科院分区：
文献类型：
--
作者：
Hunley, Keith;Bowern, Claire;Healy, Meghan
近年来的遗传学研究将种群遗传多样性与与非洲的距离负相关归因于连续奠基人效应（SFE）进化过程。最近的一项语言学研究得出结论，人类语言中类似的音素库存衰减也是SFE过程的产物。然而，SFE过程对群体内部和群体之间的中性遗传多样性模式做出了额外的预测，这些预测尚未在音位数据上进行测试。在这项研究中，我们描述了这些预测，并在语言和基因样本上进行了测试。语言样本包括725种广泛使用的语言，总共包含908个不同的音素。遗传样本由100个广泛人群中的614个常染色体微卫星位点组成。遗传模式的所有方面都与SFE的预测一致。相反，对于音位数据，SFE的大部分预测都被违背了。我们表明，音素清单提供了语言之间最近接触的信息。然而，由于音素变化迅速，它们不能提供更古老的进化过程的信息。
Recent genetic studies attribute the negative correlation between population genetic diversity and distance from Africa to a serial founder effects (SFE) evolutionary process. A recent linguistic study concluded that a similar decay in phoneme inventories in human languages was also the product of the SFE process. However, the SFE process makes additional predictions for patterns of neutral genetic diversity, both within and between groups, that have not yet been tested on phonemic data. In this study, we describe these predictions and test them on linguistic and genetic samples. The linguistic sample consists of 725 widespread languages, which together contain 908 distinct phonemes. The genetic sample consists of 614 autosomal microsatellite loci in 100 widespread populations. All aspects of the genetic pattern are consistent with the predictions of SFE. In contrast, most of the predictions of SFE are violated for the phonemic data. We show that phoneme inventories provide information about recent contacts between languages. However, because phonemes change rapidly, they cannot provide information about more ancient evolutionary processes.