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Contrasting the ancestry patterns of three distinct population groups from the northernmost region of South America
Author(s) -
Mogollón Olivares Fernanda,
Moncada Madero Julie,
CasasVargas Andrea,
Zea Montoya Sara,
Suárez Medellín Dayana,
Gusmão Leonor,
Usaquén William
Publication year - 2020
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.24130
Subject(s) - ancestry informative marker , indigenous , genetic genealogy , indel , population , geography , genetic diversity , diversity (politics) , genetic admixture , ethnic group , demography , evolutionary biology , founder effect , population genetics , biology , allele frequency , allele , genetics , anthropology , ecology , haplotype , genotype , sociology , single nucleotide polymorphism , gene
Colombia, located in the north of the South American subcontinent is a country of great interest for population genetic studies given its high ethnic and cultural diversity represented by the admixed population, 102 indigenous peoples and African descent populations. In this study, an analysis of the genetic structure and ancestry was performed based on 46 ancestry informative INDEL markers (AIM‐INDELs) and considering the genealogical and demographic variables of 451 unrelated individuals belonging to nine Native American, two African American, and four multiple ancestry populations. Measures of genetic diversity, ancestry components, and genetic substructure were analyzed to build a population model typical of the northernmost part of the South American continent. The model suggests three types of populations: Native American, African American, and multiple ancestry. The results support hypotheses posed by other authors about issues like the peopling of South America and the existence of two types of Native American ancestry. This last finding could be crucial for future research on the peopling of Colombia and South America in that a single origin of all indigenous communities should not be assumed. It then would be necessary to consider other events that could explain their genetic variability and complexity throughout the continent.