Investigating incipient speciation in Arabidopsis lyrata from patterns of transmission ratio distortion.

ABSTRACT: Our understanding of the development of intrinsic reproductive isolation is still largely based on theoretical models and thorough empirical studies on a small number of species. Theory suggests that reproductive isolation develops through accumulation of epistatic genic incompatibilities, also known as Bateson-Dobzhansky-Muller (BDM) incompatibilities. We can detect these from marker transmission ratio distortion (TRD) in hybrid progenies of crosses between species or populations, where TRD is expected to result from selection against heterospecific allele combinations in hybrids. TRD may also manifest itself because of intragenomic conflicts or competition between gametes or zygotes. We studied early stage speciation in Arabidopsis lyrata by investigating patterns of TRD across the genom

SUBMITTER: Leppala J 

PROVIDER: S-EPMC3697974 | biostudies-literature | 2013 Jul

REPOSITORIES: biostudies-literature