コメント on "アンダマン諸島の住民の起源の再構築"
Malliya Gounder Palanichamy1, Suraksha Agrawal, Yong-Gang Yao
1Laboratory for Conservation and Utilization of Bio-resource, Yunnan University, Kunming 650091, China.
Science (New York, N.Y.)
|January 28, 2006
まとめ
ミトコンドリアDNA分析により,インドのラジバンシ族は,アンダマン諸島の住民と古代の血統を共有していることが示唆されています. この発見は,M31ハプラグループを示しています.
科学分野:
- 人間の進化を研究する.
- 集団遺伝学 人口遺伝学
- 古代のDNA分析について
背景:
- ミトコンドリアDNA (mtDNA) 配列解析は,Thangaraj et al. によって行われました. 提案されたアンダマン諸島の住民は,アフリカから移住した最初の人間の子孫である.
- M31a系統は以前,大アンダマン人集団で観察されていた.
研究 の 目的:
- M31ハプラ群の起源を調査する.
- インド大陸の住民とアンダマン諸島の住民の間の遺伝的つながりを調査する.
主な方法:
- ミトコンドリアDNAシーケンシングは,インド北東部の2人のラジバンシ族の個体で行われました.
- 既知のハプラグループ,特にM31a.との mtDNA配列の比較分析.
主要な成果:
- インド北東部の2人のラジバンシ族の個人は,3つの特定の変異を持つmtDNAを持っていることが判明しました.
- これらの変異は,大アンダマンで確認されたM31a系統と共有されています.
結論:
- この発見は,M31ハプラグループの前身がインド亜大陸に起源を持つことを示唆している.
- これは,アンダマン諸島の住民がアフリカ外からの最古の移民を独占的に代表するという考えに異議を唱え,インド亜大陸の早期存在を示しています.
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