Microsatellite studies on an isolated population of African descent in the Brazilian state of Bahia
The African descent population of the Bananal community in the Brazilian state of Bahia (BA) was characterized as a genetic isolate and analyzed for some short tandem repeat (STR) microsatellite autosomic polymorphic loci (CSF1PO, TH01, TPOX, F13A1, FESFPS and vWA). These genetic variants were furth...
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| Format: | Article |
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Sociedade Brasileira de Genética
2006-01-01
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| Series: | Genetics and Molecular Biology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000100004 |
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| author | Ana Angélica Leal Barbosa Sandra Mara Bispo Sousa Kiyoko Abé-Sandes Carlos Alberto Alonso Vicente Schneider Denise C.C. Costa Iglenir João Cavalli Eliane Elisa Souza Azevêdo |
| author_facet | Ana Angélica Leal Barbosa Sandra Mara Bispo Sousa Kiyoko Abé-Sandes Carlos Alberto Alonso Vicente Schneider Denise C.C. Costa Iglenir João Cavalli Eliane Elisa Souza Azevêdo |
| author_sort | Ana Angélica Leal Barbosa |
| collection | DOAJ |
| description | The African descent population of the Bananal community in the Brazilian state of Bahia (BA) was characterized as a genetic isolate and analyzed for some short tandem repeat (STR) microsatellite autosomic polymorphic loci (CSF1PO, TH01, TPOX, F13A1, FESFPS and vWA). These genetic variants were further compared to data obtained from an urban sample from the town of Jequié (BA) regarding demographic and anthropogenetic aspects. The Bananal sample comprised 32 unrelated individuals whereas Jequié was represented by 76 individuals. The Bananal Negroid Phenotypic Index (NPI) was 0.98 and the Negroid Cultural Index (NCI) 0.24. Consanguineous marriages occurred at a frequency of 34.61% and the F value was 0.0126. All six loci studied were in Hardy-Weinberg Equilibrium (p > 0.05). The genotypic and allele frequencies of the CSF1PO and vWA loci were similar. In the Bananal population the genic diversity of the THO1 locus was 66.8% and that of the F13A1 locus was 83.7%. The estimated ethnic racial admixture was 81% African and 19% Amerindian. The multiple correlation coefficient (R²) indicated adequate adaptation (99%). Total genetic variation for the six loci was 82.9% with an index of 6.7% for population subdivision (G ST' = 0.067). Anthropologic data and results obtained from the allele frequencies of the loci studied are indicative of a genetic isolate in Bananal, reminiscent of the a 'quilombo community' (i.e. one founded by run away slaves). |
| first_indexed | 2024-12-17T12:52:20Z |
| format | Article |
| id | doaj.art-70e229e574184bcea1934d5f82ab6a09 |
| institution | Directory Open Access Journal |
| issn | 1415-4757 1678-4685 |
| language | English |
| last_indexed | 2024-12-17T12:52:20Z |
| publishDate | 2006-01-01 |
| publisher | Sociedade Brasileira de Genética |
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| series | Genetics and Molecular Biology |
| spelling | doaj.art-70e229e574184bcea1934d5f82ab6a092022-12-21T21:47:35ZengSociedade Brasileira de GenéticaGenetics and Molecular Biology1415-47571678-46852006-01-01291233010.1590/S1415-47572006000100004Microsatellite studies on an isolated population of African descent in the Brazilian state of BahiaAna Angélica Leal BarbosaSandra Mara Bispo SousaKiyoko Abé-SandesCarlos Alberto AlonsoVicente SchneiderDenise C.C. CostaIglenir João CavalliEliane Elisa Souza AzevêdoThe African descent population of the Bananal community in the Brazilian state of Bahia (BA) was characterized as a genetic isolate and analyzed for some short tandem repeat (STR) microsatellite autosomic polymorphic loci (CSF1PO, TH01, TPOX, F13A1, FESFPS and vWA). These genetic variants were further compared to data obtained from an urban sample from the town of Jequié (BA) regarding demographic and anthropogenetic aspects. The Bananal sample comprised 32 unrelated individuals whereas Jequié was represented by 76 individuals. The Bananal Negroid Phenotypic Index (NPI) was 0.98 and the Negroid Cultural Index (NCI) 0.24. Consanguineous marriages occurred at a frequency of 34.61% and the F value was 0.0126. All six loci studied were in Hardy-Weinberg Equilibrium (p > 0.05). The genotypic and allele frequencies of the CSF1PO and vWA loci were similar. In the Bananal population the genic diversity of the THO1 locus was 66.8% and that of the F13A1 locus was 83.7%. The estimated ethnic racial admixture was 81% African and 19% Amerindian. The multiple correlation coefficient (R²) indicated adequate adaptation (99%). Total genetic variation for the six loci was 82.9% with an index of 6.7% for population subdivision (G ST' = 0.067). Anthropologic data and results obtained from the allele frequencies of the loci studied are indicative of a genetic isolate in Bananal, reminiscent of the a 'quilombo community' (i.e. one founded by run away slaves).http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000100004microsatelliteAfrican-descendant isolate |
| spellingShingle | Ana Angélica Leal Barbosa Sandra Mara Bispo Sousa Kiyoko Abé-Sandes Carlos Alberto Alonso Vicente Schneider Denise C.C. Costa Iglenir João Cavalli Eliane Elisa Souza Azevêdo Microsatellite studies on an isolated population of African descent in the Brazilian state of Bahia Genetics and Molecular Biology microsatellite African-descendant isolate |
| title | Microsatellite studies on an isolated population of African descent in the Brazilian state of Bahia |
| title_full | Microsatellite studies on an isolated population of African descent in the Brazilian state of Bahia |
| title_fullStr | Microsatellite studies on an isolated population of African descent in the Brazilian state of Bahia |
| title_full_unstemmed | Microsatellite studies on an isolated population of African descent in the Brazilian state of Bahia |
| title_short | Microsatellite studies on an isolated population of African descent in the Brazilian state of Bahia |
| title_sort | microsatellite studies on an isolated population of african descent in the brazilian state of bahia |
| topic | microsatellite African-descendant isolate |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000100004 |
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