A bayesian approach to genome/linguistic relationships in native South Americans.

A bayesian approach to genome/linguistic relationships in native South Americans.
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DOI:
10.1371/journal.pone.0064099
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Hünemeier T
Hünemeier T
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Amorim CE;Bisso-Machado R;Ramallo V;Bortolini MC;Bonatto SL;Salzano FM;Hünemeier T

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基因和语言的进化之间的关系已经被研究了三十多年。这些研究依赖于这样的假设,即语言和许多其他文化特征一样,以类似基因的方式进化,随着时间的推移积累可遗传的多样性,并受制于进化的变化机制。在目前的工作中,我们使用遗传数据来评估南美的语言分类。我们使用在近似贝叶斯计算(ABC)框架下分析的现实人口模型,将不一致的语言分类模型与当前的美洲原住民基因组范围的变异进行了比较。沿着常染色体分布的381个STR的数据是从代表五个主要的南美洲印第安人语言群体的文献中收集的:安第斯语系、阿拉瓦坎语系、Chibchan-Paezan语系、Macro-Jé语系和Tupi语系。结果表明,J.H.Greenberg在1987年提出的分类具有较高的后验概率,但不能排除L.Campbell在1997年提出的分类。根据格林伯格的分类,可以确定图比-阿拉瓦坎语分化的时间(2.8kya),以及当今南美洲主要语言群体之间出现这种结构的时间(3.1kya)。
The relationship between the evolution of genes and languages has been studied for over three decades. These studies rely on the assumption that languages, as many other cultural traits, evolve in a gene-like manner, accumulating heritable diversity through time and being subjected to evolutionary mechanisms of change. In the present work we used genetic data to evaluate South American linguistic classifications. We compared discordant models of language classifications to the current Native American genome-wide variation using realistic demographic models analyzed under an Approximate Bayesian Computation (ABC) framework. Data on 381 STRs spread along the autosomes were gathered from the literature for populations representing the five main South Amerindian linguistic groups: Andean, Arawakan, Chibchan-Paezan, Macro-Jê, and Tupí. The results indicated a higher posterior probability for the classification proposed by J.H. Greenberg in 1987, although L. Campbell's 1997 classification cannot be ruled out. Based on Greenberg's classification, it was possible to date the time of Tupí-Arawakan divergence (2.8 kya), and the time of emergence of the structure between present day major language groups in South America (3.1 kya).
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