Bravi C M, Sans M, Bailliet G, Martínez-Marignac V L, Portas M, Barreto I, Bonilla C, Bianchi N O
IMBICE, La Plata, Argentina.
Hum Biol. 1997 Oct;69(5):641-52.
We used a set of informative mtDNA and Y-chromosome-specific markers to determine the origin of maternal and paternal lineages in a sample of 41 Uruguayan black individuals. We found that 20 maternal lineages were African, 13 were Amerindian, and 5 were Caucasian. In three individuals we were unable to determine the ethnic origin of the mtDNA lineages. Of the 22 males analyzed we found 4 Y chromosomes of African origin, 5 of Caucasian origin, and 13 of undetermined ancestry. Our results suggest that mtDNA and Y-chromosome-specific DNA variants may be a useful tool in determining the level of mtDNA and Y chromosome ethnic introgression in a population of a given ethnic origin.
我们使用了一组信息丰富的线粒体DNA（mtDNA）和Y染色体特异性标记，来确定41名乌拉圭黑人个体样本中母系和父系谱系的起源。我们发现，20个母系谱系为非洲裔，13个为美洲印第安裔，5个为高加索裔。在三个个体中，我们无法确定其线粒体DNA谱系的种族起源。在分析的22名男性中，我们发现4条Y染色体起源于非洲，5条起源于高加索，13条祖先未明。我们的结果表明，mtDNA和Y染色体特异性DNA变异可能是确定特定种族起源人群中线粒体DNA和Y染色体种族渗入水平的有用工具。
