in·tro·gres·sion
ˌin-trə-ˈgre-shən 
: the entry or introduction of a gene from one gene complex into another (as by hybridization)
in·tro·gres·sant
ˌin‧trəˈgresᵊnt,
-trō-
plural -s
: an individual resulting from and exhibiting evidence of introgression
Examples of introgression in a Sentence
Recent Examples on the Web
Scott Travers,
Forbes.com,
18 May 2026
The ancestral connection between wolves and dogs is due to a process called introgression, the researchers said.
—
Saleen Martin,
USA Today,
26 Nov. 2025
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.
—
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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Noun
In a 2025 study published in npj Biological Timing and Sleep, researchers found genomic evidence of adaptive introgression.
—
Scott Travers,
Forbes.com,
18 May 2026
The ancestral connection between wolves and dogs is due to a process called introgression, the researchers said.
—
Saleen Martin,
USA Today,
26 Nov. 2025
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.
—
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 25 Jun. 2026.
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