introgression

American  

[in-truh-gresh-uhn] / ˌɪn trəˈgrɛʃ ən /

noun

Genetics.

1. the introduction of genes from one species into the gene pool of another species, occurring when matings between the two produce fertile hybrids.

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introgression British  

/ ˌɪntrəˈɡrɛʃən /

noun

1. the introduction of genes from the gene pool of one species into that of another during hybridization

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Etymology

Origin of introgression

First recorded in 1930–35 (earlier in literal sense of Latin ); from Latin intrōgress(us) past participle of intrōgredī “to go in, enter” ( intrō- “within, inward” + -gred-, combining form of grad(ī) “to proceed, walk” + -tus past participle suffix, with -dt- becoming -ss- ); see -ion, intro-

Example Sentences

See Examples For:

introgression

“It made sense that introgression from mexicana was important for adaptation to the highlands,” says Maud Tenaillon, a population geneticist who studies maize at CNRS, France’s national research agency, and Paris-Saclay University.

From Science Magazine ● Nov. 29, 2023

EPA regulators agreed that what the Yale scientists had found — the transfer of DNA from the corporate-created mosquitoes to the wild population, which is called introgression — was a concern.

From Los Angeles Times ● Apr. 8, 2022

Here we use genomic tools to investigate introgression in Heliconius, a rapidly radiating genus of neotropical butterflies widely used in studies of ecology, behaviour, mimicry and speciation.

From Nature ● Jul. 4, 2012

These results are again most readily explained by introgression and fixation of mimicry genes.

From Nature ● Jul. 4, 2012

Although it was long suspected that introgression might be important in evolutionary radiations, our results from the most diverse terrestrial biome on the planet suggest that adaptive introgression is more pervasive than previously realized.

From Nature ● Jul. 4, 2012

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