Introgression is emerging as an important source of novel genetic variation, alongside
standing variation and mutation. It is adaptive when such introgressed alleles are …

Hybridization has played an important role in the evolution of many lineages. With the
growing availability of genomic tools and advancements in genomic analyses, it is becoming …

Species often include multiple ecotypes that are adapted to different environments.
However, it is unclear how ecotypes arise and how their distinctive combinations of adaptive …

Speciation events often occur in rapid bursts of diversification, but the ecological and genetic
factors that promote these radiations are still much debated. Using whole transcriptomes …

Adaptive genetic variation has been thought to originate primarily from either new mutation
or standing variation. Another potential source of adaptive variation is adaptive variants from …

Hybridization has many and varied impacts on the process of speciation. Hybridization may
slow or reverse differentiation by allowing gene flow and recombination. It may accelerate …

It has long been recognized that hybridization and polyploidy are prominent processes in
plant evolution. Although classically recognized as significant in speciation and adaptation …

The evolutionary significance of hybridization and subsequent introgression has long been
appreciated, but evaluation of the genome-wide effects of these phenomena has only …

Although theory has demonstrated rather low levels of gene flow are sufficient to counteract
opposing mutation, drift, and selection, widespread recognition of the evolutionary …

Hybrid zones provide a powerful opportunity to analyze ecological and evolutionary
interactions between divergent lineages. As such, research on hybrid zones has played a …