introgressive


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in·tro·gres·sion

 (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.

[From Latin intrōgressus, past participle of intrōgredī, to step in : intrō-, intro- + gradī, to step; see ghredh- in Indo-European roots.]

in′tro·gres′sive (-grĕs′ĭv) adj.

introgressive

(ˌɪntrəˈɡrɛsɪv)
adj
(Genetics) genetics resulting from, marked by, or bringing about introgression
References in periodicals archive ?
Bidirectional introgressive hybridization between a cattle and human schistosome species.
But hybrid zones imply much more through introgressive hybridization where hybrids backcross with parental species (Arnold 1997).
Recent studies confirm the old idea introduced by Anderson in the 1940 s in his monograph introgressive hybridisation , namely that hybridisation can provide a bridge for the genetic exchange of adaptations (genes that increase fitness).
Introgressive hybridization in Mexican populations of Acacia macracantha and Acacia pennatula (Fabaceae, Mimosaceae).
INTROGRESSIVE HYBRIDIZATION AND THE EVOLUTION OF NORTH AMERICAN BAMBOOS AS REVEALED BY NUCLEAR AND CHLOROPLAST DNA.
Limited realized dispersal and introgressive hybridization influence genetic structure and conservation strategies for brown rockfish Sebastes auriculatus.
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).
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.
Aigeiros): introgressive hybridization and the chloroplast contribution of Populus elba (sect.