introgression

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introgression

(ĭn′trə-grĕsh′ən)
n.
The movement or spread of alleles of one species into the gene pool of another through repeated backcrossing of interspecific hybrids with members of one of the parental species.

in′tro·gres′sive (-grĕs′ĭv) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
References in periodicals archive ?
Phylogenetic relationships of the lamprologine cichlid genus Lepidiolamprologus (Teleostei: Perciformes) based on mitochondrial and nuclear sequences, suggesting introgressive hybridization.
Ultimately, introgressive hybridization may lead to the occurrence of a hybrid swarm (continuous gradient of individuals from one species via all classes of hybrids to another species), raising questions as to the species' identity (Coyne & Orr, 2004; Price, 2008).
come into contact with a wide array of transition (Diaz-Maroto et al., 2006), causing introgressive hybridization forming Quercus x andegavensis Hy (Amaral, 1990).
The primary concern is that GM varieties could displace native varieties and possibly cause introgressive hybridization with the wild relatives of maize, such as teosinte, which would forever alter the gene pool.
otophora Griseb., or an introgressive hybrid between the two species) (Kenton et al., 1993; Kitamura et al., 2001; Lim et al., 2000).
Avise (1994) suggested that divergence between genetic and phenotypic data may represent introgressive hybridization or recent divergence of pallid and shovelnose sturgeons.
For example, confident documentation of introgressive race formation, or measurements of pest abundance on hybrid and parental genotypic classes, rely on accurate methods of hybrid identification.
Direction of introgressive hybridization between species of North American deer (Odocoileus) as inferred from mitochondrial-cytochrome-b sequences.
Introgressive hybridizations of Schistosoma haematobium by Schistosoma bovis at the origin of the first case report of schistosomiasis in Corsica (France, Europe).