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 …

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 …

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 …

Exploration of the relationship between gene trees and their containing species trees leads
to consideration of how to reconstruct species trees from gene trees and of the concept of …

The understanding that gene trees are often in discord with each other and with the species
trees that contain them has led researchers to methods that incorporate the inherent …

Because of the stochastic way in which lineages sort during speciation, gene trees may
differ in topology from each other and from species trees. Surprisingly, assuming that genetic …

Several techniques, such as concatenation and consensus methods, are available for
combining data from multiple loci to produce a single statement of phylogenetic …

Discord among the gene trees of multilocus data has motivated the development of
phylogenetic approaches that account for gene-tree heterogeneity in the estimation …

Species delimitation and species tree inference are difficult problems in cases of recent
divergence, especially when different loci have different histories. This paper quantifies the …