Genetic Pollution

Genetic pollution is unrestricted and undesirable gene flow into the gene pool of wild populations. It is a term used especially to refer to the flow of genetically engineered alleles from transgenic crops and animals to wild organisms where they do not belong. It is of concern to conservationists because it reduces the purity of gene pools established in the wild. There has been controversy about the term, with some scientists arguing that genetic mixing might be a more useful term as it does not place value on whether pure gene pools are necessarily better or biologically 'fitter' than hybridised ones.