Speciation, the evolution of reproductive isolation among populations, is continuous, complex,
and involves multiple, interacting barriers. Until it is complete, the effects of this process …

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 provides …

Hybridization is widespread in nature and, in some instances, can result in the formation of
a new hybrid species. We investigate the genetic foundation of this poorly understood …

Adaptive divergence and speciation may happen despite opposition by gene flow. Identifying
the genomic basis underlying divergence with gene flow is a major task in evolutionary …

Speciation is a continuous process and analysis of species pairs at different stages of divergence
provides insight into how it unfolds. Previous genomic studies on young species pairs …

Parallel evolution of similar traits by independent populations in similar environments is
considered strong evidence for adaptation by natural selection. Often, however, replicate …

Parallel speciation occurs when selection drives repeated, independent adaptive divergence
that reduces gene flow between ecotypes. Classical examples show parallel speciation …

Both classical and recent studies suggest that chromosomal inversion polymorphisms are
important in adaptation and speciation. However, biases in discovery and reporting of …

House sparrows (Passer domesticus) are a hugely successful anthrodependent species;
occurring on nearly every continent. Yet, despite their ubiquity and familiarity to humans, …

Hybridization is an important source of variation; it transfers adaptive genetic variation across
species boundaries and generates new species. Yet, the limits to viable hybrid genome …