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 …

The importance of hybridization in plant speciation and evolution has been debated for
decades, with opposing views of hybridization as either a creative evolutionary force or …

It has recently become clear that several human lineages coexisted with Homo sapiens
during the late Middle and Late Pleistocene. Here, we report an archaic human fossil that …

A two-marker combination of plastid rbcL and matK has previously been recommended as
the core plant barcode, to be supplemented with additional markers such as plastid trnH …

Like the formation of animal species, plant speciation is characterized by the evolution of
barriers to genetic exchange between previously interbreeding populations. Prezygotic …

A defining feature of species is that their constituting populations are connected by gene
flow. However, interspecific gene flow (introgression) can affect species integrity. If some …

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

Genetic data are frequently used to delimit species, where species status is determined on
the basis of an exclusivity criterium, such as reciprocal monophyly. Not only are there …

Studies of invasive species can simultaneously inform management strategies and quantify
rapid evolution in the wild. The role of genomics in invasion science is increasingly …

Many species comprise multiple cytotypes that represent autopolyploids, or presumed
autopolyploids, of the basic diploid cytotype. However, rarely has an autopolyploid been …