Alleles that introgress between species can influence the evolutionary and ecological fate of
species exposed to novel environments. Hybrid offspring of different species are often unfit …

While often deleterious, hybridization can also be a key source of genetic variation and pre-
adapted haplotypes, enabling rapid evolution and niche expansion. Here we evaluate these …

Introgressed DNA is often deleterious at many loci in the recipient species' genome, and is
therefore purged by selection. Here, we use mathematical modeling and whole-genome …

A broad array of endosymbionts radiate through host populations via vertical transmission,
yet much remains unknown concerning the cellular basis, diversity, and routes underlying …

Animal evolution is characterized by frequent turnover of sexually dimorphic traits—new sex-
specific characters are gained, and some ancestral sex-specific characters are lost, in many …

Although the mechanisms driving the evolution of genome size are not yet fully understood,
one potentially important factor is the dynamics of the accumulation of mobile selfish genetic …

Comparative studies of reproductive isolation (RI) by Coyne and Orr (,) and others indicate a
significant role for reinforcing natural selection in Drosophila speciation. The reinforcement …