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

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 …

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 …

Molecular phylogenetics has fundamentally altered our understanding of the taxonomy,
systematics and biogeography of corals. Recently developed phylogenomic techniques …

Speciation is the process by which barriers to gene flow evolve between populations.
Although we now know that speciation is largely driven by natural selection, knowledge of …

The large body of theory on speciation with gene flow has brought to light fundamental
differences in the effects of two types of mating rules on speciation: preference/trait rules, in …

The∼ 26 definitions of species often yield different numbers of species and disparate
grou**s, with financial, legal, biological and conservation implications. Using conservation …

Studies of plants have been instrumental for revealing how new species originate. For
several decades, botanical research has complemented and, in some cases, challenged …

Most approaches to species delimitation to date have considered divergence-only models.
Although these models are appropriate for allopatric speciation, their failure to incorporate …

The tenet that ecological opportunity drives adaptive diversification has been central to
theories of speciation since Darwin, yet no widely accepted definition or mechanistic …