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  2. Fixed allele - Wikipedia

    en.wikipedia.org/wiki/Fixed_allele

    These random fluctuations within the allele frequencies can lead to the fixation or loss of certain alleles within a population. To the right is an image that shows through successive generations; the allele frequencies fluctuate randomly within a population. The smaller the population size, the faster fixation or loss of alleles will occur.

  3. Fixation (population genetics) - Wikipedia

    en.wikipedia.org/wiki/Fixation_(population_genetics)

    In population genetics, fixation is the change in a gene pool from a situation where there exists at least two variants of a particular gene in a given population to a situation where only one of the alleles remains. That is, the allele becomes fixed. [1]

  4. Negative selection (natural selection) - Wikipedia

    en.wikipedia.org/wiki/Negative_selection...

    Purging of deleterious alleles can be achieved on the population genetics level, with as little as a single point mutation being the unit of selection. In such a case, carriers of the harmful point mutation have fewer offspring each generation, reducing the frequency of the mutation in the gene pool.

  5. Mutation–selection balance - Wikipedia

    en.wikipedia.org/wiki/Mutation–selection_balance

    Nevertheless, the concept is still widely used in evolutionary genetics, e.g. to explain the persistence of deleterious alleles as in the case of spinal muscular atrophy, [5] [4] or, in theoretical models, mutation-selection balance can appear in a variety of ways and has even been applied to beneficial mutations (i.e. balance between selective ...

  6. Gene flow - Wikipedia

    en.wikipedia.org/wiki/Gene_flow

    Gene flow is the transfer of alleles from one population to another population through immigration of individuals. In population genetics, gene flow (also known as migration and allele flow) is the transfer of genetic material from one population to another. If the rate of gene flow is high enough, then two populations will have equivalent ...

  7. Dry January: What is it and how beneficial can giving up ...

    www.aol.com/dry-january-beneficial-giving...

    The Dry January campaign was started in 2013 by Alcohol Change U.K., a charity focused on reducing alcohol harm. What are the health benefits of Dry January? While research on how quitting alcohol ...

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    While many fast-food joints claim they serve “real” chicken, some still rely on antibiotic-laden, factory-farmed mystery meat. Here are 7 chains that actually use high-quality, real chicken.

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    Walmart deals are always incredible this time of year, and while Walmart Black Friday deals haven't cooled down yet, they're only going to last a few more days. As Cyber Monday approaches, we took ...

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