COM.on C.A.4:e18/109-114   Online published on Nov.5, 2010.
doi:10.4236/coca.2010.41018
FOCUS
 Multiple Origins of Archaic Homo sapiens Indicated by Denisova Hominin DNA

YUAN Yuan, LI Hui

MOE Key Laboratory of Contemporary Anthropology, Fudan University, Shanghai 200433 China

ABSTRACT: A number of archaic Homo sapien from 1.2-0.32mya have been found throughout Africa, Asia, and Europe. However, little is known about the relationships and the evolutionary pathways of various archaic Homo sapiens. In 2008, a bone of an unknown hominin (dated 48-30kya), was excavated at Denisova Cave in the Altai Mountains of southern Siberia. This Denisova hominin was found to be a species of archaic Homo sapiens. However, the phylogenetic analysis based on the complete mitochondrion DNA (mtDNA) shows that the Denisova hominin branches off much earlier than the divergence of modern humans and European archaic Homo sapiens (i.e. Neanderthals), which occurred about one million years ago. This result indicates the high diversity and multiple origins of archaic Homo sapiens. Further researches of archaic Homo sapiens, especially those found throughout East Asia will be quite helpful in revealing the detailed phylogeny of the human evolution.

Key words: Denisova hominin; archaic Homo sapiens; ancient DNA; phylogenetic tree

Recieved: May.24, 2010   Accepted: Oct.24, 2010  Corresponding: LiHui.Fudan@gmail.com

《现代人类学通讯》第四卷e18篇 第109-114页  2010年11月5日网上发行

动态评论

丹人DNA揭示的早期智人的多起源

袁媛，李辉

复旦大学现代人类学教育部重点实验室，上海200433

摘要：早期智人生活于大约120-3.2万年前，是形态上介于直立人和晚期智人之间的古人种，欧亚非地区都有丰富的早期智人化石。然而不同时期和地区的早期智人的进化谱系尚不明确，也很难判断早期智人对现代人是否有遗传贡献。2008年在阿尔泰山丹尼索瓦洞穴中出土了一个未知人类的指骨，该未知人类生活在3-5万年前，被称为丹人，属于早期智人。丹人的线粒体基因组DNA显示丹人与现代人的最近共同祖先大约在100万年前。结合尼人mtDNA的研究，可以准确找到丹人在进化谱系上的位置。目前分析过的尼人和丹人与现代人有不同的遗传距离，提示了早期智人相对于现代人并不是一个内部一致的分类单位，而可能是多起源的。深入研究世界上其他的早期智人，特别是东亚早期智人可能会揭示早期智人的更为复杂的进化谱系，完善我们对人类进化的认识。

关键词：丹人；早期智人；古DNA；进化树

 

收稿日期： 2010年5月24日  修回日期： 2010年10月24日 联系人：李辉 LiHui.Fudan@gmail.com
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Focus on: Krause J, et al. (2010) The complete mitochondrial DNA genome of an unknown hominin from southern Siberia. Nature 464: 894-897.

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