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  The current genomic landscape of western South America: Andes, Amazonia and Pacific Coast

Barbieri, C., Barquera Lozano, R. J., Arias, L., Sandoval, J. R., Acosta, O., Zurita, C., et al. (2019). The current genomic landscape of western South America: Andes, Amazonia and Pacific Coast. Molecular Biology and Evolution, msz174. doi:10.1093/molbev/msz174.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-6230-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-6231-6
Genre: Journal Article

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 Creators:
Barbieri, Chiara1, Author              
Barquera Lozano, Rodrigo José2, Author              
Arias, Leonardo, Author
Sandoval, José R, Author
Acosta, Oscar, Author
Zurita, Camilo, Author
Aguilar-Campos, Abraham, Author
Tito-Álvarez, Ana M, Author
Serrano-Osuna, Ricardo, Author
Gray, Russell D.1, Author              
Mafessoni, Fabrizio, Author
Heggarty, Paul1, Author              
Shimizu, Kentaro K, Author
Fujita, Ricardo, Author
Stoneking, Mark, Author
Pugach, Irina, Author
Fehren-Schmitz, Lars, Author
Affiliations:
1Linguistic and Cultural Evolution, Max Planck Institute for the Science of Human History, Max Planck Society, ou_2074311              
2Archaeogenetics, Max Planck Institute for the Science of Human History, Max Planck Society, ou_2074310              

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 Abstract: Studies of Native South American genetic diversity have helped to shed light on the peopling and differentiation of the continent, but available data are sparse for the major ecogeographic domains. These include the Pacific Coast, a potential early migration route; the Andes, home to the most expansive complex societies and to one of the most widely-spoken indigenous language families of the continent (Quechua); and Amazonia, with its understudied population structure and rich cultural diversity. Here we explore the genetic structure of 176 individuals from these three domains, genotyped with the Affymetrix Human Origins array. We infer multiple sources of ancestry within the Native American ancestry component; one with clear predominance on the Coast and in the Andes, and at least two distinct substrates in neighboring Amazonia, including a previously undetected ancestry characteristic of northern Ecuador and Colombia. Amazonian populations are also involved in recent gene-flow with each other and across ecogeographic domains, which does not accord with the traditional view of small, isolated groups. Long-distance genetic connections between speakers of the same language family suggest that indigenous languages here were spread not by cultural contact alone. Finally, Native American populations admixed with post-Columbian European and African sources at different times, with few cases of prolonged isolation. With our results we emphasize the importance of including under-studied regions of the continent in high-resolution genetic studies, and we illustrate the potential of SNP chip arrays for informative regional-scale analysis.

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Language(s): eng - English
 Dates: 2019-06-27
 Publication Status: Published online
 Pages: 31
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1093/molbev/msz174
Other: shh2337
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Title: Molecular Biology and Evolution
  Other : Mol. Biol. Evol.
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: - Sequence Number: msz174 Start / End Page: - Identifier: ISSN: 0737-4038
CoNE: https://pure.mpg.de/cone/journals/resource/954925536119