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Genetic drift (article) | Natural selection | Khan Academy
https://www.khanacademy.org/science/ap-biology/natural-selection/population-genetics/a/genetic-drift-founder-bottleneck
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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Genetic drift - Wikipedia
https://en.wikipedia.org/wiki/Genetic_drift
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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Genetic Drift - Definition, Examples and Causes - Biology Dictionary
https://biologydictionary.net/genetic-drift/
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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Genetic drift | Definition, Process, & Effects | Britannica
https://www.britannica.com/science/genetic-drift
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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random genetic drift / genetic drift | Learn Science at Scitable
https://www.nature.com/scitable/definition/genetic-drift-201/
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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Genetic drift - Understanding Evolution
https://evolution.berkeley.edu/evolution-101/mechanisms-the-processes-of-evolution/genetic-drift/
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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Genetic Drift - National Human Genome Research Institute
https://www.genome.gov/genetics-glossary/Genetic-Drift
WEB5 days ago · Genetic drift is a mechanism of evolution characterized by random fluctuations in the frequency of a particular version of a gene (allele) in a population. Though it primarily affects small, isolated populations, the effects of genetic drift can be strong, sometimes causing traits to become overwhelmingly frequent or to disappear …
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Evolution - Genetic Drift, Natural Selection, Adaptation
https://www.britannica.com/science/evolution-scientific-theory/Genetic-drift
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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19.2B: Genetic Drift - Biology LibreTexts
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
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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Genetic drift, bottleneck effect, and founder effect
https://www.khanacademy.org/science/ap-biology/natural-selection/population-genetics/v/genetic-drift-bottleneck-effect-and-founder-effect
WEBIn 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 genetic variation. Created by Sal Khan. Questions. Tips & Thanks. Want to join the conversation? Log in. Sort by:
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