One of the striking observations from the young field of molecular evolutionary biology has
been the high frequency of cases where taxon-specific markers are found to differ widely in …

Hybrid or “recombinational” speciation refers to the origin of a new homoploid species via
hybridization between chromosomally or genetically divergent parental species. Theory …

The study of hybrids and their evolutionary significance is often based on a number of tacit
assumptions regarding character expression in hybrids. This article examines …

Abstract Knowledge of the nature and extent of karyotypic differences between species
provides insight into the evolutionary history of the genomes in question and, in the case of …

Although the sexual transfer of genetic material between species (ie introgression) has been
documented in many groups of plants and animals, genome‐wide patterns of introgression …

Hybrid speciation refers to the establishment of novel hybrid genotypes that are
reproductively isolated from their parental species and genetically stabilized. Most …

Understanding the genetic mechanisms of speciation and basis of species differences is
among the most important challenges in evolutionary biology. Two questions of particular …

Plant species may remain morphologically distinct despite gene exchange with congeners,
yet little is known about the genomewide pattern of introgression among species. Here we …

Systematic biology studies the organization and origin of biological diversity. Systematists
analyze patterns of variation among the products of evolution (species) and attempt to infer …

Genetic structuring of plant populations is strongly influenced by both common ancestry and
current patterns of interpopulation genetic exchange. The interaction of these two forces is …