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Random statistical effect
- A random statistical effect, genetic drift can occur only in small, isolated populations in which the gene pool is small enough that chance events can change its makeup substantially.
www.britannica.com/science/genetic-drift
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Jan 15, 2021 · 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.
- Gabe Buckley
Genetic drift, also known as random genetic drift, allelic drift or the Wright effect, [1] is the change in the frequency of an existing gene variant (allele) in a population due to random chance. [2] Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation. [3]
That, in a nutshell, is genetic drift. It happens to ALL populations — there’s no avoiding the vagaries of chance. Earlier we used this hypothetical cartoon. Genetic drift affects the genetic makeup of the population, but unlike natural selection, through an entirely random process.
Genetic 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.
- The Editors of Encyclopaedia Britannica
Dec 20, 2023 · Genetic drift is a fundamental concept in evolutionary biology, playing a crucial role in shaping the genetic makeup of populations over time. It refers to the random changes in allele frequencies that occur due to chance events, rather than natural selection.
Genetic drift can cause a new population to be genetically distinct from its original population, which has led to the hypothesis that genetic drift plays a role in the evolution of...
Feb 23, 2024 · Genetic drift, also known as allelic drift or the Wright effect, refers to the random change in the allele frequency of a particular gene in a population. It is one of the basic mechanisms of evolution with natural selection. Unlike the latter, it does not depend on an allele’s beneficial or harmful effects.
