Genetic signatures of parental contribution in black and white populations in Brazil
Genet. mol. biol
;
32(1): 1-11, 2009.
Article
in English
| LILACS
| ID: lil-505785
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.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
DNA, Mitochondrial
/
Population Dynamics
/
Genetic Heterogeneity
/
Chromosomes, Human, Y
Type of study:
Risk factors
Limits:
Humans
Country/Region as subject:
South America
/
Brazil
/
Europa
Language:
English
Journal:
Genet. mol. biol
Journal subject:
Genetics
Year:
2009
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Federal do Rio Grande do Sul/BR
Similar
MEDLINE
...
LILACS
LIS