noun
- The transfer of genetic material from one species to another through repeated backcrossing of hybrid offspring with one of the parent species.
Usage: biology; genetics; plural form of introgression
Examples
- Introgressions between wolf and dog populations have been documented in several regions.
- The study examined introgressions of wild rice genes into cultivated varieties.
- Introgressions can occur naturally when closely related species interbreed in overlapping habitats.
- Researchers tracked introgressions of disease-resistance alleles from wild plants into crop species.
- Ancient introgressions from Neanderthals into modern human genomes have been identified through DNA analysis.