Signatures of hybridization and speciation in genomic patterns of ancestry.

ABSTRACT: Genomes sampled from hybrid zones between nascent species provide important clues into the speciation process. With advances in genome sequencing and single nucleotide polymorphism (SNP) genotyping, it is now feasible to measure variation in gene flow with high genomic resolution. This progress motivates the development of conceptual and analytical frameworks for hybrid zones that complement well-established cline approaches. We extend the perspective that genomic distributions of ancestry are sensitive indicators of hybridization history. We use simulations to examine the behavior of the number of ancestry junctions-a simple summary of genomic patterns-in hybrid zones under increasingly realistic scenarios. Neutral simulations revealed that ancestry junction number is shaped by population

SUBMITTER: Hvala JA 

PROVIDER: S-EPMC6261709 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature