Adaptation by introgression
1 Department of Genetics, University of Georgia, Athens, Georgia 30602, USA
2 Department of Biology, Texas State University, San Marcos, Texas 78666, USA
Journal of Biology 2009, 8:82 doi:10.1186/jbiol176Published: 13 October 2009
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.