森林和原内内特:Y染色体哈普洛组的差异
V N Kharkov1, L V Valikhova1, D S Adamov2
1Research Institute of Medical Genetics, Tomsk National Research Medical Center of the Russian Academy of Sciences, Tomsk, Russia.
Vavilovskii zhurnal genetiki i selektsii
|September 25, 2025
概括
Y染色体分析揭示了森林和原尼内茨种群的独特遗传结构. 这些发现支持了Nenets部落中共同的男性系祖先的假设,显示出独特的族群组成,反映了他们的民族和语言起源.
科学领域:
- 人口遗传学 人口遗传学
- 人类进化研究 人类进化研究
- 人类学是人类学.
背景情况:
- 雅马洛-纳涅茨自治区的纳涅茨人由不同的森林和原亚族群组成.
- 了解尼涅茨部落的遗传景观对于了解他们的历史迁移和社会结构至关重要.
- 以前的研究已经暗示了遗传差异化,但缺乏详细的Y染色体分析.
研究的目的:
- 用Y染色体标记来研究尼涅茨族的遗传结构.
- 根据他们的遗传特征,区分原和森林内涅茨种群.
- 探索尼内特人亚族和族群中的遗传关系和祖先起源.
主要方法:
- 对606只雄性尼内特人进行分析,包括536只原尼内特人和70只森林尼内特人.
- 利用44个Y染色体短并列重复 (STR) 标记来评估遗传变异.
- 采用哈普洛组和哈普洛型分析来确定特定种群的遗传特征.
主要成果:
- 鉴定出不同的Y染色体亚系,特异于Kharyuchi (N1a2b1b1a~-B170) 和瓦努伊托 (N1a2b1b1b-B172) 族群.
- 在森林内涅茨部落中观察到N1a2b1-B478单基组的流行,在皮亚克部落中观察到一个独特的单基组 (N1a1a1a1a2a1c1~).
- 在森林和原内内特之间表现出明显的分类组组成差异,与种族和语言数据保持一致.
结论:
- 涅涅茨族的部落协会共有共同的男性血统祖先,并表现出最近的创始人效应.
- 遗传数据表明,Khanty和Enets人群的祖先贡献.
- 森林和原内内特的独特遗传特征强调了它们独特的历史轨迹和起源.
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