Hybridization, or interbreeding between different taxa, was traditionally considered to be
rare and to have a largely detrimental impact on biodiversity, sometimes leading to the …

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

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 …

The hundreds of cichlid fish species in Lake Malawi constitute the most extensive recent
vertebrate adaptive radiation. Here we characterize its genomic diversity by sequencing 134 …

In recent years, scientists have realized that evolution can occur on timescales much shorter
than the" long lapse of ages" emphasized by Darwin—in fact, evolutionary change is …

Recombination, the exchange of DNA between maternal and paternal chromosomes during
meiosis, is an essential feature of sexual reproduction in nearly all multicellular organisms …

Adaptive radiation plays a fundamental role in our understanding of the evolutionary
process. However, the concept has provoked strong and differing opinions concerning its …

As populations diverge, genetic differences accumulate across the genome. Spurred by
rapid developments in sequencing technology, genome-wide population surveys of natural …

Gene flow is a fundamental evolutionary force in adaptation that is especially important to
understand as humans are rapidly changing both the natural environment and natural levels …

Hybridisation and introgression can dramatically alter the relationships among groups of
species, leading to phylogenetic discordance across the genome and between populations …