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Genetic distances between Chinese populations calculated on gene frequencies of 38 loci 被引量:6
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作者 杜若甫 肖春杰 l. l. cavalli-sforza 《Science China(Life Sciences)》 SCIE CAS 1997年第6期613-621,共9页
Genetic distances were calculated for Han subpopulations in different provinces, cities and au-tonomous regions and ethnic minorities in China by using gene frequency data of 38 loci, and genetic trees were con-struct... Genetic distances were calculated for Han subpopulations in different provinces, cities and au-tonomous regions and ethnic minorities in China by using gene frequency data of 38 loci, and genetic trees were con-structed. The results showed that, among both Han and ethnic minorities, there were two types, i.e. southern and northern Mongoloids, with Yangtze River as boundary. Therefore, both African origin theory and local origin theory about the modern man should answer the question; when did these two types separate and how did they develop. This paper also conclusively proved genetically that the Han subpopulations in different regions are genetically close to the lo-cal ethnic minorities, which indicates that much blood of ethnic minorities has mixed into Han, at the same time, some blood of Han also has mixed into the local ethnic minorities. 展开更多
关键词 GENETIC distance phylogenic tree Chinese NATION ORIGIN of MODEM man.
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中国人群基因频率的主成分分析 被引量:42
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作者 肖春杰 杜若甫 +1 位作者 l. l. cavalli-sforza E. Minch 《中国科学(C辑)》 CSCD 2000年第4期434-442,共9页
对中国人群中38个基因座的130个等位基因的频率进行了主成分分析,绘制了主成分分布地图和主成分综合地图.结果显示,汉族人群的第1主成分分布反映了南方蒙古人种与北方蒙古人种间遗传结构差异的梯度变化,而其第2主成分分布则... 对中国人群中38个基因座的130个等位基因的频率进行了主成分分析,绘制了主成分分布地图和主成分综合地图.结果显示,汉族人群的第1主成分分布反映了南方蒙古人种与北方蒙古人种间遗传结构差异的梯度变化,而其第2主成分分布则反映了蒙古人种与高加索人种间的基因流动.中国少数民族人群的第1主成分分布与汉族中的第2主成分相似,而第2主成分分布则与汉族中的第1主成分相似.当将中国汉族与少数民族的基因频率放在一起分析时,所得出的主成分分布基本上与少数民族的相似.中国人群基因频率的第3,4主成分的分布则可能反映了古代某些地区人口骤增而向外扩展的历史事件.中国人群基因频率主成分综合地图明显地显示出:在亚洲的南、北方蒙古人种间有一明显的分界线──长江.猜测:如果中国现代人确实起源于非洲,则南、北方蒙古人种的祖先在进入亚洲以前已经分开,南方蒙古人种的祖先自非洲或中东沿海岸向东迁徙、扩展、直至东南亚,然后折向北,至华南,再直至长江,甚至可能有一段时间曾占据过长江以北的一些地区.北方蒙古人种的祖先则在帕米尔以北地区自西向东,直至东北亚,再扩展至美洲、日本等地,同时向南,直至长江.在近二三千年内,北方蒙古人种才不断向长江以南扩展、渗透. 展开更多
关键词 中国人群 基因频率 主成分分析 遗传结构
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