Hybridization between species is commonplace in plants, but is often seen as unnatural and
unusual in animals. Here, I survey studies of natural interspecific hybridization in plants and …

Whether interspecific hybridization is important as a mechanism that generates biological
diversity is a matter of controversy. Whereas some authors focus on the potential of …

Most speciation events probably occur gradually, without complete and immediate
reproductive isolation, but the full extent of gene flow between diverging species has rarely …

Comparisons of DNA sequences between Neandertals and present-day humans have
shown that Neandertals share more genetic variants with non-Africans than with Africans …

Levels of genetic differentiation between populations can be highly variable across the
genome, with divergent selection contributing to such heterogeneous genomic divergence …

It is now well known that incomplete lineage sorting can cause serious difficulties for
phylogenetic inference, but little attention has been paid to methods that attempt to …

The genetic study of diverging, closely related populations is required for basic questions on
demography and speciation, as well as for biodiversity and conservation research. However …

Despite hundreds of reports involving both plants and animals, the mechanisms underlying
introgression remain obscure, even if some form of selection is frequently invoked …

The African cichlid fish radiations are the most diverse extant animal radiations and provide
a unique system to test predictions of speciation and adaptive radiation theory. The past few …

The suggestion that chromosomal rearrangements play a role in speciation resulted from the
observation that heterokaryotypes are often infertile. However, the first chromosomal …