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10个DIP-STR标志物的遗传数据和人口结构,跨越美国四个人口群体

Lauren Hoopes¹, Diana Hall², Nicole DeWald¹

¹Department of Chemistry & Physics, Arcadia University, 450 S Easton Rd, Glenside, PA, 19038, USA.

International journal of legal medicine

|November 17, 2025

概括

这项研究表明,10个删除/插入多态度-短串重复 (DIP-STRs) 能够有效地预测不同美国人群中的祖先. 这些遗传标记可以区分非洲裔美国人,欧洲裔美国人和东亚裔美国人群体,在西南西南拉美裔个人中预计会混合.

科学领域:

法医遗传学法医遗传学
人口遗传学人口遗传学
人类祖先的人类祖先

背景情况:

删除/插入多态 (DIPs) 与短串重复 (STRs) 结合,称为DIP-STRs,是遗传标记.
最初开发用于混合分析,DIP-STR现在正在探索其作为祖先信息标记者的潜力,因为它们混合了快速和缓慢进化的多态.

研究的目的:

评估一个由10个DIP-STR标记器组成的小组在确定来自四个不同的美国人口群体的个人祖先的有效性.
评估这些标记物在区分非洲裔美国人,欧洲裔美国人,东亚裔美国人和西南西班牙裔美国人的表现.

主要方法:

来自美国四个人口群体 (非洲裔美国人,欧洲裔美国人,东亚裔美国人,西南拉美裔美国人) 的100名个体的基因型化.
利用557个HGDP-CEPH样本,先前对相同的10个DIP-STR标记物进行基因定型,作为STRUCTURE软件中的参考种群来分析遗传结构.
哈普洛型多样性分析和人口聚类.

主要成果:

在四个人口群体中共识别了116种单元类型,其中44.8%的单元类型是共享的.
对于每个DIP-STR标记物,观察到常见和独特的单元类型,这表明了人群特定的模式.
非洲裔美国人,欧洲裔美国人和东亚裔美国人样本显示出与各自的祖先种群的明显聚类,而西南西班牙裔样本显示出预期的混合物.

结论:

一个小组的10个DIP-STR标记器显示显著的力量在区分研究的美国人口群体.
这些发现支持DIP-STRs作为有效的祖先信息标记物的实用性,与参考人口数据保持一致.
这种标记面板为人口遗传学研究和涉及祖先估计的法医应用提供了宝贵的工具.

关键词:

生物地理学祖先的血统复合遗传标记物复合遗传标记物这就是DIP-STRs.遗传数据遗传数据遗传数据美国的美国. 人口总数人口总数

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