title: Adaptation by introgression.
abstract: Both selective and random processes can affect the outcome of natural hybridization. A recent analysis in BMC Evolutionary Biology of natural hybridization between an introduced and a native salamander reveals the mosaic nature of introgression, which is probably caused by a combination of selection and demography.
authors.affiliation: Department of Genetics, University of Georgia, Athens, Georgia 30602, USA. arnold@plantbio.uga.edu
authors.forename: Michael L
authors.initials: ML
authors.lastname: Arnold
authors.forename: Noland H
authors.initials: NH
authors.lastname: Martin
mesh_terms: D000818:Animals; D005075:Biological Evolution; D003433:Crosses, Genetic; D005787:Gene Frequency / Q000235:genetics*; D006824:Hybridization, Genetic / Q000235:genetics*; D013045:Species Specificity