allele frequency


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Related to allele frequency: Genotype frequency

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 ?
With the Allele Frequency Community, you immediately get access to hundreds of collaborators who are sharing this data openly and transparently.
In the current study population, the minor allele frequency of -344C>T (rs1799998) polymorphism in the CYP11B2 gene was found to be significantly lower than the Japanese and African population (p=0.
15 for allele frequency, migration rate, and inbreeding (Wilson & Rannala 2003).
Therefore, the effect of inbreeding in Jammu and Kashmir population could have lead to an increased minor allele frequency in the population.
Minor allele frequency and proportion of polymorphic SNPs were estimated using the Golden Helix SNP Variation Suite software version 7 (Golden Helix, 2013).
Based on simulation results, however, they showed that Ne could be estimated directly from allele frequency changes with little bias when intervals one generation (Table 1, JORDE and RYMAN 1995).
For those loci where no evidence of null alleles was found, a conservative working null allele frequency could be calculated by pretending that the next parent to be encountered would be a null allele carrier.
The null hypothesis was that there was no difference in minor allele frequency between the cases and the reference sample.
I][alpha] was shown and [alpha]-thal allele frequency found 4.
Assuming a similar frequency of the common msp-3[alpha] alleles in the population, we have estimated expected allele frequency of each allele to be 33%.