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)
Examples of introgression in a Sentence
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Limits of long-term selection against Neandertal introgression Jack Knudson is an assistant editor at Discover with a strong interest in environmental science and history.
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Jack Knudson, Discover Magazine, 18 Mar. 2025
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
Intriguingly, many of the hybrids most closely resemble the red shiner—a phenomenon called cryptic introgression.
—Richard Pallardy, Ars Technica, 30 July 2024
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Jack Knudson, Discover Magazine, 18 Mar. 2025
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
Intriguingly, many of the hybrids most closely resemble the red shiner—a phenomenon called cryptic introgression.
—Richard Pallardy, Ars Technica, 30 July 2024
Cite this Entry
“Introgression.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/introgression. Accessed 31 Oct. 2025.
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