Genetic Relationships between Mesoamerican Ancient Populations and with American Greater Southwest and Caribbean Populations Close to Mesoamerican Borders

4区 生物学 Q2 Medicine
A. González-Oliver, Ernesto Garfias-Morales, M. Bravo-Lopez, María Isabel De La Cruz-Laina
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引用次数: 1

Abstract

Mesoamerica is a cultural and geographic region with a northern boundary adjacent to the American Greater Southwest and a southeastern boundary that includes the Maya area, which is adjacent to the Caribbean. These regions are of interest to analyze genetic structure, ancestry, and gene flow between the ancient populations. We identified the mitochondrial DNA haplogroups and haplotypes in 19 colonial and 10 pre-Columbian Maya from Xcaret and 6 Paquimé individuals. We analyzed our data together with 603 ancient individuals and with 95 colonial and 502 pre-Columbian individuals. The results show clear genetic differences among Mesoamerica, American Greater Southwest, and Caribbean regions. High frequency of haplogroup A in Paquimé and Mine Canyon and the distribution of its haplotypes in the networks suggest these populations are probably genetically related with both Mesoamerican and the American Greater Southwest populations. The genetic structure of the Maya is due to common ancestry, and it was maintained by geographic isolation and gene flow mostly between Mayan populations. The Spanish conquest did not change this structure in the Maya from Xcaret, Quintana Roo. Although populations from Central Mexico are not genetically homogeneous, they are clearly different from Maya. Teotihuacan and Cholula were contemporary cities that allied to control the region, but they show genetic differences that could be related to a distant common ancestry; they probably descended from the same group but separated very early, before their arrival in Central Mexico.
中美洲古代人群与靠近中美洲边界的美国大西南和加勒比人群的遗传关系
中美洲是一个文化和地理区域,其北部边界毗邻美国大西南部,东南部边界包括玛雅地区,毗邻加勒比海。这些区域对分析遗传结构、祖先和古代种群之间的基因流动具有重要意义。我们鉴定了19个殖民地玛雅人和10个前哥伦比亚玛雅人的线粒体DNA单倍群和单倍型,这些人来自Xcaret和6个paquim个体。我们分析了603个古代个体、95个殖民地个体和502个前哥伦布时期个体的数据。结果显示,中美洲、美洲大西南地区和加勒比地区之间存在明显的遗传差异。paquim和Mine Canyon地区单倍群A的高频率及其在网络中的分布表明,这些人群可能与中美洲和美国大西南地区的人群有遗传关系。玛雅人的遗传结构是由于共同的祖先,它是由地理隔离和玛雅人口之间的基因流动维持的。西班牙人的征服并没有改变金塔纳罗奥州的Xcaret玛雅人的这种结构。尽管中墨西哥的人口在基因上并不相同,但他们与玛雅人明显不同。特奥蒂瓦坎和乔卢拉是联合控制该地区的当代城市,但它们表现出的基因差异可能与遥远的共同祖先有关;他们可能是同一群人的后裔,但在到达墨西哥中部之前很早就分开了。
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来源期刊
Human Biology
Human Biology 生物-生物学
CiteScore
1.90
自引率
0.00%
发文量
88
审稿时长
>12 weeks
期刊介绍: Human Biology publishes original scientific articles, brief communications, letters to the editor, and review articles on the general topic of biological anthropology. Our main focus is understanding human biological variation and human evolution through a broad range of approaches. We encourage investigators to submit any study on human biological diversity presented from an evolutionary or adaptive perspective. Priority will be given to interdisciplinary studies that seek to better explain the interaction between cultural processes and biological processes in our evolution. Methodological papers are also encouraged. Any computational approach intended to summarize cultural variation is encouraged. Studies that are essentially descriptive or concern only a limited geographic area are acceptable only when they have a wider relevance to understanding human biological variation. Manuscripts may cover any of the following disciplines, once the anthropological focus is apparent: human population genetics, evolutionary and genetic demography, quantitative genetics, evolutionary biology, ancient DNA studies, biological diversity interpreted in terms of adaptation (biometry, physical anthropology), and interdisciplinary research linking biological and cultural diversity (inferred from linguistic variability, ethnological diversity, archaeological evidence, etc.).
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