title: Adaptation, speciation and hybrid zones.
abstract: Many species are divided into a mosaic of genetically distinct populations, separated by narrow zones of hybridization. Studies of hybrid zones allow us to quantify the genetic differences responsible for speciation, to measure the diffusion of genes between diverging taxa, and to understand the spread of alternative adaptations.
authors.affiliation: Department of Genetics and Biometry, University College London, UK.
authors.forename: N H
authors.initials: NH
authors.lastname: Barton
authors.forename: G M
authors.initials: GM
authors.lastname: Hewitt
mesh_terms: D000222:Adaptation, Physiological / Q000235:genetics*; D000818:Animals; D005787:Gene Frequency; D006824:Hybridization, Genetic; D008957:Models, Genetic; D015233:Models, Statistical; D013045:Species Specificity