An unintended consequence of global change is an increase in opportunities for
hybridization among previously isolated lineages. Here we illustrate how global change can …

The last decade highlighted polyploidy as a rampant evolutionary process that triggers
drastic genome reorganization, but much remains to be understood about their causes and …

Mimulus guttatus and M. nasutus are an evolutionary and ecological model sister species
pair differentiated by ecology, mating system, and partial reproductive isolation. Despite …

The study of genetic exchange resulting from natural hybridization, horizontal gene transfer,
and viral recombination has long been marked by controversy between researchers holding …

Closely related species (eg, sister taxa) often occupy very different ecological niches and
can exhibit large differences in geographic distributions despite their shared evolutionary …

Incompletely isolated species provide an opportunity to investigate the genetic mechanisms
and evolutionary forces that maintain distinct species in the face of ongoing gene flow. Here …

Whole genome duplication (polyploidization) is a mechanism of “instantaneous” species
formation that has played a major role in the evolutionary history of plants. Much of what we …

Chromosomal rearrangement polymorphisms are common and increasingly found to be
associated with adaptive ecological divergence and speciation. Rearrangements, such as …

Speciation can occur on both large and small geographical scales. In plants, local
speciation, where small populations split off from a large-ranged progenitor species, is …

Allopolyploidization often happens recurrently, but the evolutionary significance of its
iterative nature is not yet fully understood. Of particular interest are the gene flow dynamics …