Shedding Light on the Grey Zone of Speciation along a Continuum of Genomic Divergence.

ABSTRACT: Speciation results from the progressive accumulation of mutations that decrease the probability of mating between parental populations or reduce the fitness of hybrids-the so-called species barriers. The speciation genomic literature, however, is mainly a collection of case studies, each with its own approach and specificities, such that a global view of the gradual process of evolution from one to two species is currently lacking. Of primary importance is the prevalence of gene flow between diverging entities, which is central in most species concepts and has been widely discussed in recent years. Here, we explore the continuum of speciation thanks to a comparative analysis of genomic data from 61 pairs of populations/species of animals with variable levels of divergence. Gene flow betwee

SUBMITTER: Roux C 

PROVIDER: S-EPMC5189939 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature