Spatially explicit analysis reveals complex human genetic gradients in the Iberian Peninsula.

ABSTRACT: The Iberian Peninsula is a well-delimited geographic region with a rich and complex human history. However, the causes of its genetic structure and past migratory dynamics are not yet fully understood. In order to shed light on them, here we evaluated the gene flow and genetic structure throughout the Iberian Peninsula with spatially explicit modelling applied to a georeferenced genetic dataset composed of genome-wide SNPs from 746 individuals belonging to 17 different regions of the Peninsula. We found contrasting patterns of genetic structure throughout Iberia. In particular, we identified strong patterns of genetic differentiation caused by relevant barriers to gene flow in northern regions and, on the other hand, a large genetic similarity in central and southern regions. In addition,

SUBMITTER: Pimenta J 

PROVIDER: S-EPMC6534591 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature