Pronunciation: (in"tru-gresh'un), [key]
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 Pronunciation: (in"tru-gres'iv). [key]
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.