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1. Genetic drift - Wikipedia
Link: https://en.wikipedia.org/wiki/Genetic_drift
Description: WEBGenetic drift, also known as random genetic drift, allelic drift or the Wright effect, is the change in the frequency of an existing gene variant in a population due to random chance. Genetic drift may cause gene variants to disappear completely and …
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2. Genetic drift (article) | Natural selection | Khan Academy
Link: https://www.khanacademy.org/science/ap-biology/natural-selection/population-genetics/a/genetic-drift-founder-bottleneck
Description: WEBGenetic drift is a mechanism of evolution in which allele frequencies of a population change over generations due to chance (sampling error). Genetic drift occurs in all populations of non-infinite size, but its effects are strongest in small populations.
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3. Genetic Drift - Definition, Examples and Causes - Biology Dictionary
Link: https://biologydictionary.net/genetic-drift/
Description: WEBJan 15, 2021 · Definition. Genetic drift is a change in allele frequency in a population, due to a random selection of certain genes. Oftentimes, mutations within the DNA can have no effect on the fitness of an organism. These changes in genetics can increase or decrease in a population, simply due to chance.
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4. Genetic drift | Definition, Process, & Effects | Britannica
Link: https://www.britannica.com/science/genetic-drift
Description: WEBGenetic drift, a change in the gene pool of a small population that takes place strictly by chance. Genetic drift can result in genetic traits being lost from a population or becoming widespread in a population without respect to the survival or reproductive value of the alleles involved.
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5. random genetic drift / genetic drift | Learn Science at Scitable
Link: https://www.nature.com/scitable/definition/genetic-drift-201/
Description: WEBGenetic drift describes random fluctuations in the numbers of gene variants in a population. Genetic drift takes place when the occurrence of variant forms of a gene, called alleles,...
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6. Genetic drift - Understanding Evolution
Link: https://evolution.berkeley.edu/evolution-101/mechanisms-the-processes-of-evolution/genetic-drift/
Description: WEBEvo 101. Genetic drift. Genetic drift is one of the basic mechanisms of evolution. In each generation, some individuals may, just by chance, leave behind a few more descendants (and genes, of course!) than other individuals.
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7. Evolution - Genetic Drift, Natural Selection, Adaptation
Link: https://www.britannica.com/science/evolution-scientific-theory/Genetic-drift
Description: WEBThe effects of genetic drift in changing gene frequencies from one generation to the next are quite small in most natural populations, which generally consist of thousands of reproducing individuals. The effects over many generations are more important.
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8. Genetic drift, bottleneck effect, and founder effect
Link: https://www.khanacademy.org/science/ap-biology/natural-selection/population-genetics/v/genetic-drift-bottleneck-effect-and-founder-effect
Description: WEBEvolution has multiple mechanisms, including genetic drift, which involves random changes in trait frequency. In particular, genetic drift is more likely in small populations. Examples include the bottleneck effect, where a disaster reduces population size, and the founder effect, where a small group starts a new population; both result in less ...
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9. 19.2B: Genetic Drift - Biology LibreTexts
Link: https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Book%3A_General_Biology_(Boundless)/19%3A_The_Evolution_of_Populations/19.02%3A_Population_Genetics/19.2B%3A_Genetic_Drift
Description: WEBOct 31, 2023 · Genetic drift is the change in allele frequencies of a population due to random chance events, such as natural disasters. Learning Objectives. Distinguish between selection and genetic drift. Key Points.
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10. Genetic Drift and Effective Population Size - Nature
Link: https://www.nature.com/scitable/topicpage/genetic-drift-and-effective-population-size-772523/
Description: WEBGenetic drift is the reason why we worry about African cheetahs and other species that exist in small populations. Drift is more pronounced in such populations, because smaller populations have...
