The domestication of plants and animals over the past 11,500 years has had a significant
effect not just on the domesticated taxa but also on human evolution and on the biosphere …

The flow of genes between different species represents a form of genetic variation whose
implications have not been fully appreciated. Here I examine some key findings on the …

Recent studies found major conflicts between traditional taxonomy and genetic
differentiation of grass snakes and identified previously unknown secondary contact zones …

Background Elucidating the process of speciation requires an in-depth understanding of the
evolutionary history of the species in question. Studies that rely upon a limited number of …

The study of genetic exchange resulting from natural hybridization, horizontal gene transfer,
and viral recombination has long been marked by controversy between researchers holding …

The endpoint of speciation has been viewed as complete isolation and the absence of gene
flow between species. If the influx of genes from another species is maladaptive because …

Noninvasive genetics based on microsatellite markers has become an indispensable tool for
wildlife monitoring and conservation research over the past decades. However …

Introgression, the incorporation of genetic material from one (sub) species into the gene pool
of another by means of hybridization and backcrossing, is a common phenomenon in birds …

Given the availability of genomic data to identify separately evolving groups of organisms,
many researchers establish species limits based on assessments of the extent of gene flow …

'Species' are central to understanding the origin and dynamics of biological diversity;
explaining why lineages split into multiple distinct species is one of the main goals of …