introgression The incorporation of genes of one species into the gene pool of another. If the ranges of 2 species overlap and fertile hybrids are produced, the hybrids tend to backcross with the more abundant species. This results in a population in which most individuals resemble the more abundant parents but also possess some of the characters of the other parent species.

introgression The incorporation of genes of one species into the gene pool of another. If the ranges of two species overlap and fertile hybrids are produced, the hybrids tend to backcross with the more abundant species. This results in a population in which most individuals resemble the more abundant parents but also possess some of the characters of the other parent species.

introgression The incorporation of the genes of one species into the gene pool of another. If the ranges of two species overlap and fertile hybrids are produced, the hybrids tend to backcross with the more abundant species. This results in a population in which most individuals resemble the more abundant parents but also possess some of the characters of the other parent species.

introgression (introgressive hybridization) The insertion of the genes of one species into the gene pool of another. This can occur when two species interbreed to produce fertile hybrids. These can then back-cross with individuals of one of the parent species. See also hybrid zone.