Genetic population structure of two African-Ecuadorian communities of Esmeraldas
| Autor: | Christina Martínez-Labarga, Olga Rickards, José A. Peña, Rosa Maria Corbo, M.S. Mesa Santurino, A.E.B. Guevara, G. F. De Stefano, C. Varas De Vieira, Gianfranco Biondi, Renato Scacchi |
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| Jazyk: | angličtina |
| Rok vydání: | 1999 |
| Předmět: |
Biodemography
biodemography Population genetics Genetic admixture Settore BIO/08 Fixation index Settore BIO/18 - Genetica Geography Genetic distance genetic polymorphisms Evolutionary biology Anthropology Genetic structure Gene pool Anatomy genetic admixture genetic polymorphisms biodemography Allele frequency genetic admixture Demography |
| Popis: | The genetic structure of two African-Ecuadorian communities, Rio Cayapas and Viche (Esmeraldas province, northwest Ecuador), was studied on the basis of ACP1, ADA, AK1, CA2, ESD, GLO1, G6PD, PGD, and PGM1 subtypes and thermostability, PGM2, HBβ, F13A, F13B, ORM1, AHSG, C6, C7, and APOC2 gene frequency, and migration data on 255 individuals. The fixation index of Wright (FST), correspondence, and genetic distance analysis were applied to compare the genetic relationships between these communities and other American populations of African ancestry. FST values from the migration data and surname origins suggest that Rio Cayapas is genetically more isolated and shows less mobility and admixture than does Viche. The genetic admixture estimates indicate a large contribution of African genes to the gene pool of both communities (74.3% to 58.4%), whereas the proportion of the Amerindian component differs significantly (14.5% in Rio Cayapas to 27.6% in Viche). Am J Phys Anthropol 109:159–174, 1999.© 1999 Wiley-Liss, Inc. |
| Databáze: | OpenAIRE |
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