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 ?
The distribution of genotype and allele frequencies in overall and sex-specific RA patients (RA positive and RA negative) and controls in cohort 1 and cohort 2 are represented in Table 2.
Among the polymorphic, 72% (37,370) SNPs were found to be polymorphic across the whole breeds with variable or similar allele frequencies for SNPs.
2 (free statistical software) was performed to compare genotype and allele frequencies in the study groups.
XRCC1 allele frequencies * Codon Wild allele Variant allele 194 0.
At the conclusion of simulation, data files allow students to graph and study allele frequencies over time or study critters' genotypes and phenotypes.
However, a detailed review of non-Western historical sources revealed that scurvy was a major health issue in East and South-East Asians as well (10), a finding that can be reconciled with the fact that South-East Asian populations show very high Hp 2 allele frequencies (e.
F-statistics estimates were calculated according to Nei & Chesser (1983) and their statistical significance was tested using a homogeneity [chi square] test for homogeneity of allele frequencies across samples, and the probability of the null hypothesis was estimated using a Monte Carlo simulation.
ij] are the allele frequencies of the allele j of this locus in the respective pair or group of lines.
The genotyping data was used to estimate the allele frequencies and genotype frequencies.
Allele frequencies and genotype frequencies were obtained by the direct counting method.
Allele frequencies and heterozygosity rates for the three polymorphisms in the 13 families are presented in Table-II.
Detailed results of MEFV genes allele frequencies are presented in Table 2.