Abstract:
:A total of 582 individuals (1,164 chromosomes) from two African, eight African-derived South American, five South American Amerindian, and three Brazilian urban populations were studied at four variable number of tandem repeat (VNTR) and two short tandem repeat (STR) hypervariable loci. These two sets of loci did not show distinct allele profiles, which might be expected if different processes promoted their molecular differentiation. The two African groups showed little difference between them, and their intrapopulational variation was similar to those obtained in the African-derived South American communities. The latter showed different degrees of interpopulation variability, despite the fact that they presented almost identical average degrees of non-African admixture. The F(ST) single locus estimates differed in the five sets of populations, probably due to genetic drift, indicating the need to consider population structure in the evaluation of their total variability. A high interpopulational diversity was found among Amerindian populations in relation to Brazilian African-derived isolated communities. This is probably a consequence of the differences in the patterns of gene flow and genetic drift that each of these semi-isolated groups experienced.
journal_name
Am J Phys Anthropoljournal_title
American journal of physical anthropologyauthors
Da Silva WA Jr,Bortolini MC,Meyer D,Salzano FM,Elion J,Krishnamoorthy R,Schneider MP,De Guerra DC,Layrisse Z,Castellano HM,Weimer TD,Zago MAdoi
10.1002/(SICI)1096-8644(199908)109:4<425::AID-AJPAsubject
Has Abstractpub_date
1999-08-01 00:00:00pages
425-37issue
4eissn
0002-9483issn
1096-8644pii
10.1002/(SICI)1096-8644(199908)109:4<425::AID-AJPAjournal_volume
109pub_type
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