古吉拉特州的母系遗传祖先:一个普莱斯托时代通往印度的通道
Shailesh Desai1, Mohammed H M Alqaisi2,3, Prajjval Pratap Singh1,4
1Gyan Lab, Cytogenetics Unit, Department of Zoology, Banaras Hindu University, Varanasi, India.
American journal of biological anthropology
|December 31, 2025
概括
在古吉拉特州的母系遗传分析显示,主要是土著祖先,西欧亚的基因流量最小,早于草原迁徙. 这挑战了印度亚裔移民到印度的传统模式.
科学领域:
- 人口遗传学 人口遗传学
- 古代DNA分析 古代DNA分析
- 关于母亲的祖先
背景情况:
- 沿海古吉拉特的古人类学意义和在古代文明中的作用.
- 在该地区对母亲遗传史的先前研究有限.
- 需要进行广泛的线粒体DNA (mtDNA) 分析.
研究的目的:
- 在印度古吉拉特州全面分析母亲遗传史.
- 调查人口流动和混合事件.
- 为印欧和德拉维达人种群路线提供母系遗传视角.
主要方法:
- 从古吉拉特州对168个完整的线粒体基因组进行了测序.
- 遗传学分析包括529个来自欧亚和南亚的额外的线粒基因组.
- 贝叶斯模型用于重建随时间变化的人口规模的变化.
主要成果:
- 古吉拉特邦76%的母系血统是南亚土著.
- 西欧亚的贡献为21%,其中81%是草原迁移之前的.
- 有证据表明,有多个小规模的西欧亚流入,而不是单一的大流入.
结论:
- 西印度在很大程度上表现出土著母系祖先,最近的替代最小.
- 母亲的血统表明,早期,从西欧亚的基因流动碎片化.
- 这些发现挑战了传统的印度亚裔移民模式.
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