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introgressive hybridization

 - 1 dictionary result

in⋅tro⋅gres⋅sion

[in-truh-gresh-uhn]
–noun Genetics.
the introduction of genes from one species into the gene pool of another species, occurring when matings between the two produce fertile hybrids.
Also called in⋅tro⋅gres⋅sive hybridiza⋅tion [in-truh-gres-iv] .


Origin:
1930–35 (earlier in literal sense of L); < L intrōgress(us), ptp. of intrōgredī to go in, enter (intrō- intro- + -gred-, comb. form of grad(ī) to proceed, walk + -tus ptp. suffix, with -dt- > -ss-) + -ion
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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