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Population structure and admixture in Cerro Largo, Uruguay, based on blood markers and mitochondrial DNA polymorphisms
Author(s) -
Sans Mónica,
Merriwether D. Andrew,
Hidalgo Pedro C.,
Bentancor Nilo,
Weimer Tania A.,
Franco Maria Helena L.P.,
Alvarez Inés,
Kemp Brian M.,
Salzano Francisco M.
Publication year - 2006
Publication title -
american journal of human biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.559
H-Index - 81
eISSN - 1520-6300
pISSN - 1042-0533
DOI - 10.1002/ajhb.20520
Subject(s) - hum , mitochondrial dna , context (archaeology) , population , genetics , hypervariable region , evolutionary biology , biology , genetic marker , demography , ancestry informative marker , geography , gene , allele frequency , genotype , history , paleontology , sociology , performance art , art history
Recent studies of the Uruguayan population revealed different amounts of Amerindian and African genetic contributions. Our previous analysis of Afro‐Uruguayans from the capital city of the Department of Cerro Largo showed a high proportion of African genes, and the effects of directional mating involving Amerindian women. In this paper, we extended the analysis to a sample of more than 100 individuals representing a random sample of the population of the whole Department. Based on 18 autosomal markers and one X‐linked marker, we estimated 82% European, 8% Amerindian, and 10% African contributions to their ancestry, while from seven mitochondrial DNA site‐specific polymorphic markers and sequences of hypervariable segment I, we determined 49% European, 30% Amerindian, and 21% African maternal contributions. Directional matings between Amerindian women and European men were detected, but differences involving Africans were not significant. Data about the specific origins of maternal lineages were also provided, and placed in a historical context. Am. J. Hum. Biol. 18:513–524, 2006. © 2006 Wiley‐Liss, Inc.