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パプア人のデニソヴァン族の祖先が多種多種多様である
Guy S Jacobs1, Georgi Hudjashov2, Lauri Saag3
1Complexity Institute, Nanyang Technological University, Singapore 637723, Singapore.
Cell
|April 15, 2019
まとめ
現代人はデニソヴァン族と 交配しています 古代のDNA分析は パプア人と東アジア人の 異なるデニソヴァン系を明らかにし 複雑な古代のヒトの相互作用を示しています
科学分野:
- 人間 の 進化
- パレオゲネティクス
- 人口遺伝学
背景:
- ネアンデルタール人とデニソワ人の ゲノム配列は知られています
- 古代のホミニンは アフリカから広がった 現代人と交配した
研究 の 目的:
- 東南アジアとニューギニアの 現代人のDNAを調査する
- 古代のヒトの侵入の起源と複雑さについて
主な方法:
- 東南アジアとニューギニアの島から161の新しいゲノムの分析.
- 高信頼性の古いハプロタイプを特定する
- 古代ヒトゲノムとの比較
主要な成果:
- 161の新しいゲノムで高信頼性の古いハプロタイプが特定されました.
- 現代のパプア人は 大きく異なる2つのデニソヴァン系統の 遺伝子変異体を持っています
- 3つ目のデニソヴァン系は 現代東アジア人に発見されました
結論:
- 地理的に孤立した デニソヴァン族の集団が 集まったのです
- デニソワ人の血統は 35万年前に分離した
- 古代のヒトとの接触は複雑で 地域によって様々でした
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