introgression

noun

in·​tro·​gres·​sion ˌin-trə-ˈgre-shən 

: the entry or introduction of a gene from one gene complex into another (as by hybridization)

introgressant

ˌin-trə-ˈgre-sᵊnt 

adjective or noun

introgressive

ˌin-trə-ˈgre-siv 

adjective

Examples of introgression in a Sentence

Recent Examples on the Web

More recently, preliminary work by Taylor’s team has helped reveal the genetics underlying some of the deficits other scientists have observed in hybrids: genes related to metabolism and cognition show especially low rates of introgression. —Rebecca Heisman, Scientific American, 17 Sep. 2024

These hybrid zones are often quite stable over time, with insignificant introgression, or breeding back, to the parent populations. —Richard Pallardy, Ars Technica, 30 July 2024

Every bird sampled on Oahu, Maui, and Hawaii had hybrid ancestry, indicating that mallard introgression had resulted in a hybrid swarm. —Richard Pallardy, Ars Technica, 30 July 2024

Intriguingly, many of the hybrids most closely resemble the red shiner—a phenomenon called cryptic introgression. —Richard Pallardy, Ars Technica, 30 July 2024

This is called introgression, which occurs when genetic information is transferred from one lineage or species to another as the result of hybridization. —Elizabeth Rayne, Ars Technica, 22 May 2024

No evidence for introgression/admixture at this locus. —Razib Khan, Discover Magazine, 19 Nov. 2019

However, genomic segments bearing important agronomic traits originated only once in one population and spread across all cultivars through introgression and human selection. —Razib Khan, Discover Magazine, 13 June 2011

First, a post from the past: Neandertal & humans – introgression. —Razib Khan, Discover Magazine, 5 Feb. 2011

Word History

Etymology

intro- + -gression (as in regression)

First Known Use

1938, in the meaning defined above