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北アメリカにおける古代人の並列の系統は沿岸の拡大に寄与した
C L Scheib1,2, Hongjie Li3, Tariq Desai4
1Department of Archaeology, University of Cambridge, Cambridge CB2 3DZ, UK. cls83@ut.ee tk331@cam.ac.uk malhi@illinois.edu.
まとめ
最初のアメリカ人は
科学分野:
- 遺伝学と人類学
背景:
- アメリカ大陸の定住は 完全に理解されていない.
- 過去のゲノム研究では 古代住民と現代のネイティブアメリカンとの 関連が示唆されています
研究 の 目的:
- アメリカ大陸の最初の民族の 遺伝的起源を調査する
- 古代北米の祖先を特定するために
主な方法:
- カリフォルニア州とオンタリオ州南西部の 91人の古人の遺体の ゲノム解析
- 既存の古代と現代のヒトのデータセットとの比較ゲノム分析.
主要な成果:
- 北米の古代の2つの異なる祖先集団を特定し,氷河の氷床の南に潜在的に分岐した.
- 現代の中南アメリカ人は この2つの集団から祖先を 引き出していることが示された.
- 観察された祖先の割合は,沿岸部への移住と,その後の混合の出来事と一致する.
結論:
- アメリカ大陸の定住には少なくとも2つの異なる祖先の系統が含まれていた.
- 古代カリフォルニアとオンタリオのゲノムは 初期のアメリカの人口動態に関する 重要な洞察力を提供します
- ゲノムデータは,アメリカ大陸の人口の沿岸の分散と複雑な混合のモデルをサポートしています.
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