African-derived South American populations: A history of symmetrical and asymmetrical matings according to sex revealed by bi- and uni-parental genetic markers
✍ Scribed by Maria Cátira Bortolini; Wilson Araújo Da Silva Junior; Dinorah Castro De Guerra; Gabriela Remonatto; Rosana Mirandola; Mara H. Hutz; Tania A. Weimer; Maria Cristina B.O. Silva; Marco Antonio Zago; Francisco Mauro Salzano
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 106 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1042-0533
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✦ Synopsis
Estimates of African, European, and Amerindian contributions to the gene pool of 11 predominantly African-derived South American populations were obtained using five autosomal and one Y chromosome hypervariable loci, as well as mitochondrial DNA (sequences of the first hypervariable segment of the control region, plus two restriction sites and the presence or absence of the CoII/tRNA Lys intergenic 9-bp deletion). The three latter characteristics are reported here for the first time for 42 individuals living in three Brazilian populations. Thirty-eight sequences were identified in these persons; 17 (45%) could be classified as being of African, 4 (11%) of Amerindian, and 2 (5%) of European origin. Evidence for asymmetrical matings in relation to sex and ethnic group was obtained for nine of the 11 populations. The most consistent finding was the introduction of European genes through males, but the results differ in the several communities, indicating the importance of local factors in such interactions. Am.