Systematists and population geneticists can both use molecular data sets to construct
evolutionary trees (species and gene trees, respectively), and then use the resulting …

A gene tree is an evolutionary reconstruction of the genealogical history of the genetic
variation found in a sample of homologous genes or DNA regions that have experienced …

Species-level phylogenies derived from molecular data provide an indirect record of the
speciation events that have led to extant species. This offers enormous potential for …

The advent and maturation of algorithms for estimating species trees—phylogenetic trees
that allow gene tree heterogeneity and whose tips represent lineages, populations and …

Resurgent interest in the genetics of population divergence and speciation coincides with
recent critical evaluation of species concepts and proposals for species delimitation. An …

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 …

The practice of tracking geographical divergence along a phylogenetic tree has added an
evolutionary perspective to biogeographic analysis within single species. In spite of the …

We describe a software package (SpedeSTEM) that allows researchers to conduct a species
delimitation analysis using intraspecific genetic data. Our method operates under the …

The relationship between species is usually represented as a bifurcating tree with the
branching points representing speciation events. The ancestry of genes taken from these …

▪ Abstract The proper relationship between systematics practice and our understanding of
evolution has been long debated. Systematists seek to avoid assumptions about …