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                            Library & Multimedia
 Reconstructing Native American population history
NCJ Number
              307064
Journal

*Nature* Volume: 488 Dated: 2012 Pages: 370-374
Author(s)
          David Reich;
                        Nick Patterson;
                        Desmond Campbell;
                        et al
Date Published

2012
Length
              5 pages
Annotation
              The authors examine genetic, archaeological, and linguistic research discussing the origins of the Native populations that settled the Americas.
Abstract
              The peopling of the Americas has been the subject of extensive genetic, archaeological, and linguistic research; however, central questions remain unresolved. One contentious issue is whether the settlement occurred by means of a single migration or multiple streams of migration from Siberia. The pattern of dispersals within the Americas is also poorly understood. To address these questions at a higher resolution than was previously possible, the authors assembled data from 52 Native American and 17 Siberian groups genotyped at 364,470 single nucleotide polymorphisms. Here, the authors show that Native Americans descend from at least three streams of Asian gene flow. Most descend entirely from a single ancestral population that the authors call ‘First American’. However, speakers of Eskimo–Aleut languages from the Arctic inherit almost half their ancestry from a second stream of Asian gene flow, and the Na-Dene-speaking Chipewyan from Canada inherit roughly one-tenth of their ancestry from a third stream. The authors show that the initial peopling followed a southward expansion facilitated by the coast, with sequential population splits and little gene flow after divergence, especially in South America. A major exception is in Chibchan speakers on both sides of the Panama isthmus, who have ancestry from both North and South America. (Publisher Abstract Provided)
      
  
          Additional Details
Grant Number(s)
        2010-DN-BX-K225


  
  
        
  Agencies
        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)


  
  
        
  Award
        Further Development of SNP Panels for Forensics
    
  
  
Date Published: January 1, 2012
    
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