Genetic signatures of parental contribution in black and white populations in Brazil
Genet. mol. biol
; Genet. mol. biol;32(1): 1-11, 2009.
Article
em En
| LILACS
| ID: lil-505785
Biblioteca responsável:
BR26.1
ABSTRACT
Two hundred and three individuals classified as white were tested for 11 single nucleotide polymorphisms plus two insertion/deletions in their Y-chromosomes. A subset of these individuals (n = 172) was also screened for sequences in the first hypervariable segment of their mitochondrial DNA (mtDNA). In addition, complementary studies were done for 11 of the 13 markers indicated above in 54 of 107 black subjects previously investigated in this southern Brazilian population. The prevalence of Y-chromosome haplogroups among whites was similar to that found in the Azores (Portugal) or Spain, but not to that of other European countries. About half of the European or African mtDNA haplogroups of these individuals were related to their places of origin, but not their Amerindian counterparts. Persons classified in these two categories of skin color and related morphological traits showed distinct genomic ancestries through the country. These findings emphasize the need to consider in Brazil, despite some general trends, a notable heterogeneity in the pattern of admixture dynamics within and between populations/groups.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
DNA Mitocondrial
/
Dinâmica Populacional
/
Heterogeneidade Genética
/
Cromossomos Humanos Y
Tipo de estudo:
Risk_factors_studies
Limite:
Humans
País/Região como assunto:
America do sul
/
Brasil
/
Europa
Idioma:
En
Revista:
Genet. mol. biol
Assunto da revista:
GENETICA
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Brasil