genetic drift

noun

: random changes in gene frequency especially in small populations when leading to preservation or extinction of particular genes

Examples of genetic drift in a Sentence

Recent Examples on the Web
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Coop’s research uses mathematical models and genomic data to explore how natural selection, genetic drift, and environmental forces shape genetic variation in human populations and other species. Sacbee.com, 12 May 2025 The answer could come down to an evolutionary process called genetic drift. Quanta Magazine, 18 Dec. 2024 In addition, some wild animals in zoos have been bred under human care and over time, might become susceptible to allergies through genetic drift. Jen McCaffery, Discover Magazine, 14 Nov. 2024 But genetic drift works to preserve mutations across generations. Paul Smaglik, Discover Magazine, 27 June 2024 See All Example Sentences for genetic drift

Word History

First Known Use

1945, in the meaning defined above

Time Traveler
The first known use of genetic drift was in 1945

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Cite this Entry

“Genetic drift.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/genetic%20drift. Accessed 29 May. 2025.

Medical Definition

genetic drift

noun
: random changes in gene frequency especially in small populations when leading to preservation or extinction of particular genes

More from Merriam-Webster on genetic drift

Last Updated: - Updated example sentences
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