Bortolini M C, Baptista C, Callegari-Jacques S M, Weimer T A, Salzano F M
Genetics Department, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
Ann Hum Genet. 1998 Mar;62(Pt 2):133-45. doi: 10.1046/j.1469-1809.1998.6220133.x.
Two sets of markers and populations were considered in this study: (a) the variability at 17 protein loci and in the sequences of the first hypervariable segment of the mitochondrial DNA (mtDNA) were compared in 10 South American Indian tribes, in a total 3016 and 241 individuals, respectively; and (b) a triple comparison was made, in relation to 17 protein, mtDNA and six hypervariable tandem repeat loci in four Brazilian Indian tribes, involving 1567, 56 and 194 persons, respectively. Both the intrapopulational diversities and the population relationships obtained in these groups with these different sets of markers showed no significant correlation. High levels of heterogeneity were observed both at the protein and hypervariable individual loci, as well between mtDNA sites. The different positions observed for the Yanomama (but not for the other nine tribes) in the trees which summarized the protein and mtDNA data suggest some degree of asymmetric interchange related to sex between them and neighbouring tribes.
(a) 在10个南美印第安部落中，分别对17个蛋白质位点的变异性以及线粒体DNA（mtDNA）第一高变区序列进行了比较，样本总数分别为3016人和241人；(b) 对四个巴西印第安部落中的17个蛋白质、mtDNA和六个高变串联重复位点进行了三重比较，涉及人数分别为1567人、56人和194人。在这些群体中，通过这些不同组标记获得的群体内多样性和群体关系均未显示出显著相关性。在蛋白质和高变个体位点以及mtDNA位点之间均观察到高度的异质性。在总结蛋白质和mtDNA数据的树形图中，雅诺马马人（但其他九个部落没有）所处的不同位置表明，他们与相邻部落之间在性别方面存在一定程度的不对称交流。
