Speciation is driven by the evolution of reproductive isolating barriers that reduce, and
ultimately prevent, substantial gene flow between lineages. Despite its central role in …

Barriers to reproduction are often how progress in speciation is measured. Nonetheless, an
unresolved question concerns the extent to which reproductive barriers diminish gene flow …

Introgression is an important source of genetic variation that can determine species
adaptation to environmental conditions. Yet, definitive evidence of the genomic and adaptive …

The repeated transition from outcrossing to selfing is a key topic in evolutionary biology.
However, the molecular basis of such shifts has been rarely examined due to lack of …

Biodiversity hotspots, such as the Caucasus mountains, provide unprecedented
opportunities for understanding the evolutionary processes that shape species diversity and …

The evolution of reproductive isolation (RI) results in the reduction of interspecific
hybridization and the maintenance of species boundaries. Asymmetries in RI, where one …

Hybrid zones have the potential to shed light on evolutionary processes driving adaptation
and speciation. Secondary contact hybrid zones are particularly powerful natural systems for …

Reproductive barriers and divergent traits may occur between populations of the same
species occurring at different habitat types. Here, we investigated the reproductive …

Hybridization is commonly reported in angiosperms, generally based on morphology, and in
few cases confirmed by molecular markers. Fuchsia has a long tradition of ornamental …

Reproductive isolation is conferred by several barriers that occur at different stages of
reproduction. Comprehensive reviews on the topic have identified that barriers occurring …