gene flow

noun

Definition of gene flow

: the passage and establishment of genes typical of one breeding population into the gene pool of another

Examples of gene flow in a Sentence

Recent Examples on the Web Traphagen says the wall won’t just affect individual locales like San Bernardino, but could change migration and gene flow at a continental scale. Richard Laugharn, National Geographic, "The U.S. border wall is tearing through wilderness, right under our noses," 2 Nov. 2020 Yet oaks form what is called a syngameon, in which ecologically and physically distinctive species persist in spite of ongoing gene flow. Andrew L. Hipp, Scientific American, "How Oak Trees Evolved to Rule the Forests of the Northern Hemisphere," 15 July 2020 These examples suggest that adaptive gene flow may play an important role in oak evolution. Andrew L. Hipp, Scientific American, "How Oak Trees Evolved to Rule the Forests of the Northern Hemisphere," 15 July 2020 As a result, Zambia’s lions exhibit gene flow in mitochondrial, rather than nuclear, genes. Meilan Solly, Smithsonian, "Zambia’s Lions Roam Areas Previously Believed to Be Uninhabitable," 28 Sep. 2019 The relatively recent gene flow from Neanderthals into modern humans is there, as is an earlier one from the ancestors of modern humans into early Neanderthals. John Timmer, Ars Technica, "Neanderthals may have interbred with a much older human lineage," 20 Feb. 2020 There's also an indication of gene flow from a ghost population into the Denisovan lineage, which has been seen in other studies. John Timmer, Ars Technica, "Neanderthals may have interbred with a much older human lineage," 20 Feb. 2020 This doesn’t allow a lot of gene flow—and seemingly surpassable obstacles, like small stretches of deep water—have provided enough separation for the animals to uniquely evolve in different places. National Geographic, "These sharks have evolved to walk on land—and they did it quickly," 23 Jan. 2020 But habitat fragmentation linked with human development has left some tigers isolated in small reserves, and if current trends continue, the government may need to artificially maintain the gene flow by moving tigers between sanctuaries. Jason Daley, Smithsonian, "Tiger Takes Record-Breaking 800-Mile Trek Across India," 3 Dec. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'gene flow.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of gene flow

1939, in the meaning defined above

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The first known use of gene flow was in 1939

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Last Updated

25 Nov 2020

Cite this Entry

“Gene flow.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gene%20flow. Accessed 5 Dec. 2020.

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More Definitions for gene flow

gene flow

noun

Medical Definition of gene flow

: the passage and establishment of genes typical of one breeding population into the gene pool of another

More from Merriam-Webster on gene flow

Britannica.com: Encyclopedia article about gene flow

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