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Estructura genética de poblaciones indígenas del occidente colombiano mediante el uso de marcadores ligados al cromosoma Y

Authors: Franco-Candela, Fabián Andrés; Barreto, Guillermo;

Estructura genética de poblaciones indígenas del occidente colombiano mediante el uso de marcadores ligados al cromosoma Y

Abstract

Colombia presenta una amplia gama de etnias amerindias, sin embargo, es preocupante la escasa y fragmentada información genética que se tiene de ellas. Comprender su estructura genética y niveles de flujo génico es urgente para inferir las relaciones filogenéticas, origen y procesos de mestizaje ocurridos a través del tiempo. En el presente estudio, utilizando marcadores ligados al cromosoma Y (Y- STR, Y-SNP) se analizaron 204 amerindios del occidente colombiano (131 procesados en este trabajo y 73 con datos tomados de la literatura) pertenecientes a las etnias Nasa (Páez), Coyaima, Pijao, Pastos, Awakuaiker, Emberá duma, Coconuco, Guambiano (Misak), Emberá chamí y Yanaconas. El haplogrupo Q1a2a1a1*-M3 presentó la mayor frecuencia en las etnias estudiadas (58% en promedio). Con la excepción de Pijaos y Yanaconas (frecuencias del 17% y 40%, respectivamente), los haplogrupos de origen amerindio Q1a2a1a1*-M3 y Q1a2*- M346 (M242, xM3), analizados en conjunto, fueron los más frecuentes (68% en promedio), alcanzando valores superiores al 80% en los Emberas, Guambianos y Awa. Los haplogrupos para linaje europeo presentaron una frecuencia promedio del 15%, mientras los africanos 6% y de otras procedencias (J, I, F, T y G) 11%. Fue observado un conjunto de alelos Y-STRs en proceso de fijación en estas comunidades y una estructura genética significativa (RST= 0.15129), mostrando a los Pastos aislados de los demás grupos indígenas, sugiriendo una procedencia migratoria diferente y la posible influencia de la orografía andina en el flujo génico indígena. El presente trabajo hace una contribución importante al esclarecimiento de la estructura genética amerindia del occidente colombiano. © 2017. Acad. Colomb. Cienc. Ex. Fis. Nat.

Related Organizations
Keywords

Indígenas colombianos, Cromosoma Y, Indians of Colombia, Y-STRs, Amerindian Genetic Diversity, Diversidad Genética Amerindia, Y-SNPs, Y-Chromosome

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
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