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Brazil
Wednesday 28 September 2005
The vast majority of Y-chromosomes proved to be of European origin. Indeed, there were no significant differences when the haplogroup frequencies in Brazil and Portugal were compared by means of an exact test of population differentiation. (11090340)
Distinct footprints of Italian immigration to southern Brazil, migration of Moroccan Jews to the Amazon region, and possible relics of the 17th-century Dutch invasion of northeast Brazil could be seen in the data. (11090340)
mtDNA data in white Brazilians showed that > or =60% of the matrilineages were Amerindian or African. (11090340)
2.5% of the Y-chromosome lineages were from sub-Saharan Africa, and none were Amerindian. (11090340)
Results configure a picture of strong directional mating between European males and Amerindian and African females, which agrees with the known history of the peopling of Brazil since 1500. (11090340)
See also
DNA polymorphisms
nonrecombining portion of the Y-chromosome
References
Marinho AN, Miranda NC, Braz V, Ribeiro-Dos-Santos AK, de Souza SM. Paleogenetic and taphonomic analysis of human bones from Moa, Beirada, and Ze Espinho Sambaquis, Rio de Janeiro, Brazil. Mem Inst Oswaldo Cruz. 2006 Dec 5;101 Suppl 2:15-23. PMID: 17308804
Hunemeier T, Carvalho C, Marrero AR, Salzano FM, Junho Pena SD, Bortolini MC. Niger-Congo speaking populations and the formation of the Brazilian gene pool: mtDNA and Y-chromosome data. Am J Phys Anthropol. 2007 Jun;133(2):854-67. PMID: 17427922
Abe-Sandes K, Silva WA Jr, Zago MA. Heterogeneity of the Y chromosome in Afro-Brazilian populations. Hum Biol. 2004 Feb;76(1):77-86. PMID: 15222681
Carvalho-Silva DR, Santos FR, Rocha J, Pena SD. The phylogeography of Brazilian Y-chromosome lineages. Am J Hum Genet. 2001 Jan;68(1):281-6. PMID: 11090340
