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Characterization of Mitochondrial DNA and Y-Chromosome Haplotypes in a Uruguayan Population of African Ancestry

CLAUDIO M. BRAVI, MÓNICA SANS, GRACIELA BAILLIET, VERÓNICA L. MARTÍNEZ-MARIGNAC, MÓNICA PORTAS, ISABEL BARRETO, CAROLINA BONILLA and NÉSTOR O. BIANCHI
Human Biology
Vol. 69, No. 5 (October 1997), pp. 641-652
Stable URL: http://www.jstor.org/stable/41465588
Page Count: 12
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Characterization of Mitochondrial DNA and Y-Chromosome Haplotypes in a Uruguayan Population of African Ancestry
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Abstract

We used a set of informative mtDNA and Y-chromosomespecific 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.

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