Estimating parameters of speciation models based on refined summaries of the joint site-frequency spectrum.

ABSTRACT: Understanding the processes and conditions under which populations diverge to give rise to distinct species is a central question in evolutionary biology. Since recently diverged populations have high levels of shared polymorphisms, it is challenging to distinguish between recent divergence with no (or very low) inter-population gene flow and older splitting events with subsequent gene flow. Recently published methods to infer speciation parameters under the isolation-migration framework are based on summarizing polymorphism data at multiple loci in two species using the joint site-frequency spectrum (JSFS). We have developed two improvements of these methods based on a more extensive use of the JSFS classes of polymorphisms for species with high intra-locus recombination rates. First, usi

SUBMITTER: Tellier A 

PROVIDER: S-EPMC3102651 | biostudies-literature | 2011

REPOSITORIES: biostudies-literature