The metaphor of 'genomic islands of speciation'was first used to describe heterogeneous
differentiation among loci between the genomes of closely related species. The biological …

The emerging field of speciation genomics is advancing our understanding of the evolution
of reproductive isolation from the individual gene to a whole-genome perspective. In this …

Species can be defined as populations that are diagnosably distinct, reproductively isolated,
cohesive, or exclusive groups of organisms. Boundaries between species in sympatry are …

The origin of biological diversity, via the formation of new species, can be inextricably linked
to adaptation to the ecological environment. Specifically, ecological processes are central to …

Fragmentation of animal and plant populations typically leads to genetic erosion and
increased probability of extirpation. Although these effects can usually be reversed by re …

Reproductive isolation in plants occurs through multiple barriers that restrict gene flow
between populations, but their origins remain uncertain. Work in the past decade has shown …

A latitudinal gradient in biodiversity has existed since before the time of the dinosaurs, yet
how and why this gradient arose remains unresolved. Here we review two major hypotheses …

Charles Darwin's travels on HMS Beagle taught him that islands are an important source of
evidence for evolution. Because many islands are young and have relatively few species …

Levels of genetic differentiation between populations can be highly variable across the
genome, with divergent selection contributing to such heterogeneous genomic divergence …

During the process of speciation, populations may diverge for traits and at their underlying
loci that contribute barriers to gene flow. These barrier traits and barrier loci underlie …