Gene frequency

(Syn allele frequency); a measure of the relative frequency of an allele on a genetic locus in a population

Description
Gene frequency is usually expressed as a proportion or a percentage. In population genetics, allele frequencies show the genetic diversity of a species population or equivalently the richness of its gene pool. Allele frequency is defined as follows:
 * 1) a particular chromosome locus and the gene occupying that locus
 * 2) a population of individuals carrying n loci in each of their somatic cells (e.g. two loci in the cells of diploid species, which contain two sets of chromosomes)
 * 3) the fraction or percentage of loci that an allele (or variant) occupies within a population