Ecologically mediated selection against hybrids, caused by hybrid phenotypes fitting poorly
into available niches, is typically viewed as distinct from selection caused by epistatic …

Epistasis occurs when the effect of a mutation depends on its carrier's genetic background.
Despite increasing evidence that epistasis for fitness is common, its role during evolution is …

A primary roadblock to our understanding of speciation is that it usually occurs over a
timeframe that is too long to study from start to finish. The idea of a speciation continuum …

Intrinsic postzygotic isolation typically appears as reduced viability or fertility of interspecific
hybrids caused by genetic incompatibilities between diverged parental genomes …

Speciation, that is, the evolution of reproductive barriers eventually leading to complete
isolation, is a crucial process generating biodiversity. Recent work has contributed much to …

Human impact is noticeable around the globe, indicating that a new era might have begun:
the Anthropocene. Continuing human activities, including land‐use changes, introduction of …

The genetic architecture of speciation, ie, how intrinsic genomic incompatibilities promote
reproductive isolation (RI) between diverging lineages, is one of the best-kept secrets of …

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 …

Understanding the processes of population divergence and speciation remains a core
question in evolutionary biology. For nearly a hundred years evolutionary geneticists have …

Hybridization and resulting introgression are important processes shaping the tree of life
and appear to be far more common than previously thought. However, how the genome …