Mitochondrial DNA analysis suggests a Chibchan migration into Colombia

The characterization of mitochondrial DNA (mtDNA) allows the establishment of genetic structures and phylogenetic relationships in human populations, tracing lineages far back in time. We analysed samples of mtDNA from twenty (20) Native American populations (700 individuals) dispersed throughout Co...

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Autor Principal: Noguera-Santamaría, Maria Claudia; Instituto de Genética Humana, Facultad de Medicina, Pontificia Universidad Javeriana. Grupo de Genética Humana, Facultad de Medicina, Universidad de La Sabana. Facultad de Ciencias de la Salud. Grupo Gisafaco. Corporación Universitaria Remington
Otros Autores: Anderson, Carl Edlund; Department of Foreign Languages & Cultures, Universidad de La Sabana, Uricoechea, Daniel; Grupo de Genética Humana, Facultad de Medicina, Universidad de La Sabana, Durán, Clemencia; Instituto de Genética Humana, Facultad de Medicina, Pontificia Universidad Javeriana., Briceño-Balcázar, Ignacio; Instituto de Genética Humana, Facultad de Medicina, Pontificia Universidad Javeriana Grupo de Genética Humana, Facultad de Medicina, Universidad de La Sabana, Bernal-Villegas, Jaime; Instituto de Genética Humana, Facultad de Medicina, Pontificia Universidad Javeriana Universidad Tecnológica de Bolívar
Formato: info:eu-repo/semantics/article
Idioma: eng
Publicado: Pontificia Universidad Javeriana 2015
Materias:
Acceso en línea: http://revistas.javeriana.edu.co/index.php/scientarium/article/view/10626
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Sumario: The characterization of mitochondrial DNA (mtDNA) allows the establishment of genetic structures and phylogenetic relationships in human populations, tracing lineages far back in time. We analysed samples of mtDNA from twenty (20) Native American populations (700 individuals) dispersed throughout Colombian territory. Samples were collected during 1989-1993 in the context of the program Expedición Humana (“Human Expedition”) and stored in the Biological Repository of the Institute of Human Genetics (IGH) at the Pontificia Universidad Javeriana (Bogotá, Colombia). Haplogroups were determined by analysis of RFLPs. Most frequent was haplogroup A, with 338 individuals (48.3%). Haplogroup A is also one of the most frequent haplogroups in Mesoamerica, and we interpret our finding as supporting models that propose Chibchan-speaking groups migrated to northern Colombia from Mesoamerica in prehistoric times. Haplogroup C was found in 199 individuals (28.4%), while less frequent were B and D, with 113 and 41 (16% and 6%) individuals, respectively. The haplogroups of nine (9) individuals (1.3%) could not be determined due to the low quality of the samples of DNA. Although all the sampled populations had genetic structures that fit broadly into the patterns that might be expected for contemporary Central and South American indigenous groups, it was found that haplogroups A and B were more frequent in northern Colombia, while haplogroups C and D were more frequent in southern and south-western Colombia.