Journal
AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY
Volume 143, Issue 3, Pages 458-464Publisher
WILEY-BLACKWELL
DOI: 10.1002/ajpa.21358
Keywords
DRD4; VNTR; Amerindian populations; selection; genetic structure
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Funding
- Institutos do Milenio
- Programa de Apoio a Grupos de Excelencia
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
- Fundacao de Amparo a Pesquisa do Estado do Rio Grande do Sul
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The DRD4 variable number of tandem repeats (VNTR) allele distribution of 172 Guarani (Kaiowa and Nandeva subgroups) and Kaingang Brazilian Amerindians is reported. These results are integrated with those previously obtained for this ethnic group. Allele frequencies for the three populations are within the interval observed for 15 other Native American populations and show intermediate values between those observed in Amazonia and Patagonia. Significant differences in allele distribution between recent past hunter gatherer and agriculturalist populations are observed, with an increase of the 7R allele among hunter gatherers (P < 0.001) Analysis of molecular variance (AMOVA) and pairwise F(ST) data suggest three distinct sectors for the genetic landscape of Native South America: Andes. Center/Southeast region, and Amazonia Common traits among hunter gatherers such as novelty-seeking temperament, hyperactivity, and impulsivity could have been important and advantageous in new environments during America's prehistoric colonization. Am J Phys Anthropol 143.458-464, 2010. (C) 2010 Wiley-Liss, Inc
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