title: Genetic studies in three South American black populations.
abstract: Twenty-one genetic systems were investigated in three relatively isolated South American Black populations. Unexpected allele frequencies were found in different systems in all populations, suggesting the occurrence of genetic drift and/or founder effects. The estimates of racial admixture indicate 50% to 79% of Black ancestry, with various degrees of White (18%-28%) and Amerindian (3%-32%) ancestry.
authors.affiliation: Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
authors.forename: M C
authors.initials: MC
authors.lastname: Bortolini
authors.forename: T A
authors.initials: TA
authors.lastname: Weimer
authors.forename: M H
authors.initials: MH
authors.lastname: Franco
authors.forename: F M
authors.initials: FM
authors.lastname: Salzano
authors.forename: Z
authors.initials: Z
authors.lastname: Layrisse
authors.forename: H
authors.initials: H
authors.lastname: Schneider
authors.forename: M P
authors.initials: MP
authors.lastname: Schneider
authors.forename: M L
authors.initials: ML
authors.lastname: Harada
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D044383:Black People / Q000235:genetics*; D001938:Brazil; D002648:Child; D002675:Child, Preschool; D005006:Ethnicity / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D005819:Genetic Markers; D006801:Humans; D007199:Indians, South American / Q000235:genetics; D008297:Male; D008393:Marriage; D008875:Middle Aged; D011110:Polymorphism, Genetic; D014687:Venezuela; D044465:White People / Q000235:genetics
chemical_list: D005819:Genetic Markers