Watson E, Bauer K, Aman R, Weiss G, von Haeseler A, Pääbo S
Institute of Zoology, University of Munich, Germany.
Am J Hum Genet. 1996 Aug;59(2):437-44.
mtDNA sequences were determined from 241 individuals from nine ethnic groups in Africa. When they were compared with published data from other groups, it was found that the !Kung, Mbuti, and Biaka show on the order of 10 times more sequence differences between the three groups, as well as between those and the other groups (the Fulbe, Hausa, Tuareg, Songhai, Kanuri, Yoruba, Mandenka, Somali, Tukana, and Kikuyu), than these other groups do between one other. Furthermore, the pairwise sequence distributions, patterns of coalescence events, and numbers of variable positions relative to the mean sequence difference indicate that the former three groups have been of constant size over time, whereas the latter have expanded in size. We suggest that this reflects subsistence patterns in that the populations that have expanded in size are food producers whereas those that have not are hunters and gatherers.
对来自非洲九个族群的241个人的线粒体DNA（mtDNA）序列进行了测定。当将这些序列与其他群体已发表的数据进行比较时，发现布须曼人、姆布蒂人和比亚卡人这三个群体之间以及它们与其他群体（富尔贝人、豪萨人、图阿雷格人、松海人、卡努里人、约鲁巴人、曼丁卡人、索马里人、图卡纳人和基库尤人）之间的序列差异比其他群体相互之间的差异大约多10倍。此外，成对序列分布、合并事件模式以及相对于平均序列差异的可变位置数量表明，前三个群体的规模长期保持稳定，而后者的规模则有所扩大。我们认为，这反映了生存模式，即规模扩大的群体是食物生产者，而未扩大的群体是狩猎采集者。
