proportion of a gene copies in a population that are a given allele
allele frequency
The proportion of gene copies in a population that are a given allele is called allele frequency. Allele frequency is defined as the proportion or frequency of a particular allele (variant of a gene) present in a population’s gene pool relative to the total number of alleles for that particular gene in the population.
To calculate the allele frequency, you need to determine the number of copies of each allele present in the population. Suppose that the total number of gene copies in a population is represented by “N,” and “n” represents the total number of copies of one specific allele. Then, the frequency of that allele can be calculated as n/N.
For example, consider a population of 100 individuals and a gene with two alleles, A and a. If there are 40 copies of the A allele, the frequency of the A allele would be 40/200 or 0.4. Similarly, if there are 60 copies of the a allele, the frequency of the a allele would be 60/200 or 0.6.
It is essential to know the allele frequency of a population because it can help to predict the genetic makeup of future generations. In addition, changes in allele frequency can occur due to genetic drift, mutation, gene flow, and selection. These changes can have a significant impact on the genetic diversity of a population and can have implications for the population’s health and ability to adapt to environmental changes.
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