古代 の ハラパ 人 の ゲノム に は,草原 の 牧民 や イラン の 農民 の 祖先 が ない
Vasant Shinde1, Vagheesh M Narasimhan2, Nadin Rohland2
1Department of Archaeology, Deccan College Post-Graduate and Research Institute, Pune 411006, India.
Cell
|September 10, 2019
まとめ
古代インダス渓谷文明のゲノムは 草原の牧民ではなく 古代イラン人と東南アジアの狩猟採集者の祖先を示しています これは南アジアへの大規模農民移住の理論に 異議を唱えるものです
科学分野:
- 古代ゲノム学
- 集団遺伝学
- 考古遺伝学
背景:
- インダス渓谷文明 (IVC) は,隣接する地域との複雑な相互作用を持っていた.
- IVCの遺伝的風景を理解することは南アジアの人口の歴史にとって極めて重要です.
- 過去の仮説では,西イランから南アジアへの 農民の大規模な移住が示唆されていた.
研究 の 目的:
- インダス渓谷文明の 古代ゲノムを分析するために
- IVC個体の祖先の構成要素と集団の親和性を決定する.
- 古代イランと周辺地域との 遺伝的つながりを調査する
主な方法:
- IVCの古代人の全ゲノム解析
- 祖先の成分を特定するための添加物分析
- 古代イラン人,東南アジアの狩猟採集者,そして草原の牧民による古代DNAデータとの比較
主要な成果:
- このIVC個体のゲノムは 古代イラン人と東南アジアの 狩猟採集者の祖先の混合物です
- この遺伝子プロファイルはイランとトルクメニスタンのIVCと 文化的に結びついている 異常値と一致しています
- この個人は,現代の北西南アジア人とは異なり,小草原の牧民に由来する祖先を示した.
結論:
- IVCのイラン系祖先は,初期のイランの農民と狩猟採集者の分離より前のものです.
- この発見は,広範囲にわたる イランの農民による東への移住の仮説と矛盾している.
- 古代のイラン高原とIVCのゲノムは 独立して農業を営む 異なる狩猟採集集団に由来するようです
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