allele frequency

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allele frequency

A term used in population genetics for the number of copies of a particular allele divided by the number of copies of all alleles at that specific genetic locus in a population of interest. Allele frequency is a measure of a population’s genetic diversity: the higher the allele frequency, the greater the population’s consanguinity.
Allele frequencyclick for a larger image
Fig. 23 Allele frequency . Calculation of allele frequency from genotype frequency.

allele frequency

or

gene frequency

the proportion of a particular ALLELE of a gene in a population, relative to other alleles of the same gene. For example, if a gene has two alleles, A and a , and the frequency of A is 0.6, then the frequency of a will be 1.0 - 0.6 = 0.4. The allele frequency can be calculated from the GENOTYPE FREQUENCY; See Fig. 23 .
References in periodicals archive ?
Genotype and gene frequencies of four regions BMP15 gene were average in this population.
We expect that sub-populations with different gene frequencies and diseases will form," it says.
Such theories remain controversial however, as statistical analyses are used to evaluate gene frequencies and expression levels, making the proper categorization of genes particularly challenging.
It is not known whether gene frequencies found in the Western Cape are representative of other black populations across the country.
FPP correctly point out that a description of a NS process as a change in gene frequencies says nothing about the causal mechanisms actually giving rise to the diversity of phenotypes.
Plasmodium vivax: Favored gene frequencies of MSP-1 and the multiplicity of infection in a malaria endemic region.
Topics include: models of population growth, randomly mating populations, inbreeding, the correlation between relatives and assertive mating, properties of a finite population, distribution of gene frequencies in populations, and stochastic properties in the change of gene frequencies.
At that time, an increase in frequency of J1M267 among semi-nomadic population was likely a random fluctuation in gene frequencies.
Dawkins, for example, never proposed that the effects of natural selection were limited to gene frequencies.
At the same time, the study of gene frequencies and changing distributions of genetic markers among Native American populations has produced new data on historical settlement and migration patterns, which often challenge the archaeological evidence of early human migrations.
Differences in gene frequencies made it clear that the species of indigobirds are distinct, even though the entire group is unusually similar genetically, Sorenson says.