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

Much of what we know about speciation comes from detailed studies of well‐known model
systems. Although there have been several important syntheses on speciation, few (if any) …

The older history of hybrid zones is explored through consideration of recent advances in
climatology, paleontology and phylogeography in the Late Cenozoic, particularly the …

The Plio–Pleistocene refugia hypothesis recently gained support in explaining Brazilian
Atlantic Forest megadiversity from combined analyses of species paleodistributions and …

Hybrids between species provide information about the evolutionary processes involved in
divergence. In addition to creating hybrids in the laboratory, biologists can take advantage of …

We introduce a statistic, the genealogical sorting index (gsi), for quantifying the degree of
exclusive ancestry of labeled groups on a rooted genealogy and demonstrate its application …

Abstract Models that posit speciation in the face of gene flow are replacing classical views
that hybridization is rare between animal species. We use a multilocus approach to examine …

Destruction of habitat due to urban sprawl, pollution, and deforestation has caused
population declines or even extinction of many of the world's approximately 2,600 snake …

Lineage sorting and introgression can lead to incongruence among gene phylogenies,
complicating the inference of species trees for large groups of taxa that have recently and …

Phylogenetic relationships among Pinus species from subgenus Strobus remain unresolved
despite combined efforts based on nrITS and cpDNA. To provide greater resolution among …