期刊
AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY
卷 133, 期 2, 页码 854-867出版社
WILEY
DOI: 10.1002/ajpa.20604
关键词
uniparental genetic markers; migrant origins; gender-specific dispersal African diaspora
We analyzed sequence variation in the mitochondrial DNA (mtDNA) hypervariable segment I (HVS-1) from 201 Black individuals from two Brazilian cities (Rio de Janeiro and Porto Alegre), and compared these data with published information from 21 African populations. A subset of 187 males of the sample was also characterized for 30 Y-chromosome biallelic polymorphisms, and the data were compared with those from 48 African populations. The mtDNA data indicated that respectively 69% and 82% of the matrilineages found in Rio de Janeiro and Porto Alegre originatedfound in Rio de Janeiro and Porto Alegre originated from West-Central/Southeast Africa. These estimates are in close agreement with historical records which indicated that most of the Brazilian slaves who arrived in Rio de Janeiro were from West-Central Africa. In contrast to mtDNA, Y-chromosome haplogroup analysis did not allow discrimination between places of origin in West or West-Central Africa. Thus, when comparing these two major African regions, there seems to be higher genetic structure with mtDNA than with Y-chromosome data.
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