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 …

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 …

Character displacement is the process by which traits evolve in response to selection to
lessen resource competition or reproductive interactions between species. Although …

Allopatric speciation results from geographic isolation between populations. In the absence
of gene flow, reproductive isolation arises gradually and incidentally as a result of mutation …

There is little evidence from nature that divergent natural selection is crucial to speciation.
However, divergent selection is implicated if traits conferring adaptation to alternative …

Sexual isolation is a critical form of reproductive isolation in the early stages of animal
speciation, yet little is known about the genetic basis of divergent mate preferences and …

Abstract Sympatric races of pea aphids on alfalfa and red clover are highly ecologically
specialized and significantly reproductively isolated. Much of the restriction of gene flow …

I present patterns characterizing the evolution of intrinsic postzygotic isolation in Lepidoptera
by analyzing data from the literature on genetic distance, strength of hybrid sterility and …

Interactions between species can affect the evolution of their sexual signals, receiver
selectivity, or both. One commonly expected outcome is reproductive character …

REINFORCEMENT is the process by which natural selection strengthens sexual isolation
between incipient species, reducing the frequency of maladaptive hybridization and hence …