27个Y-STR的遗传多样性和法医参数在两个来自墨西哥西部的混血儿群体中
Astrid Desireé Sánchez-Méndez1,2, Silvia Elena Narvaez-Rivera3, Héctor Rangel-Villalobos4
1Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Guadalajara 44340, Jalisco, Mexico.
Genes
|March 28, 2025
概括
这项研究分析了墨西哥人群中27个Y染色体短并列重复 (Y-STRs),揭示了高分类型多样性和独特的分类型. 这些发现证实了YfilerTM Plus套件在墨西哥用于人类识别和调查的法医实用性.
科学领域:
- 法医遗传学 法医遗传学
- 人口遗传学 人口遗传学
- 人类识别 人类识别
背景情况:
- Y染色体短串重复 (Y-STRs) 对于法医遗传学和人口研究至关重要.
- 通过27个Y-STR标记,YfilerTM Plus套件提供了增强的歧视能力.
- 之前对这个Y-STR系统的分析缺乏墨西哥人口,限制了数据库的代表性.
研究的目的:
- 评估YfilerTM Plus套件中的27个Y-STR的遗传多样性和法医参数.
- 为了分析墨西哥西部两个不同的人群中的这些标记:Jalisco和Michoacán.
主要方法:
- 用YfilerTM Plus套件放大了DNA样本.
- 碎片分析通过毛细管电泳 (CE) 进行.
- 计算和分析了哈普洛型频率,法医参数,哈普洛组和祖先分布.
主要成果:
- 在224个总体类型中,发现了高百分比 (98.66%) 的独特类型.
- 观察到高分辨能力 (哈利斯科州98.4%,米乔阿坎州98.9%) 和类型多样性 (0.9998和0.9997).
- 哈普罗组R1b是最常见的,其次是Q,表明欧洲人和美洲原住民的祖先.
结论:
- 这项研究提供了第一份关于墨西哥人口中YfilerTM Plus 27 Y-STR哈普洛型多样性的报告.
- 结果验证了这些标记物的法医实用性,用于墨西哥的人类识别和亲属关系分析.
- 调查结果支持这些Y-STR在该地区的法医案件和刑事调查中的更强的适用性.
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