Minor allele frequency
Encyclopedia
Minor allele frequency refers to the frequency at which the less common allele
Allele
An allele is one of two or more forms of a gene or a genetic locus . "Allel" is an abbreviation of allelomorph. Sometimes, different alleles can result in different observable phenotypic traits, such as different pigmentation...

 occurs in a given population.

SNPs with a minor allele frequency of 5% or greater were targeted by the HapMap project.

MAF is widely employed in Genome Wide Association studies
Genome-wide association study
In genetic epidemiology, a genome-wide association study , also known as whole genome association study , is an examination of many common genetic variants in different individuals to see if any variant is associated with a trait...

for complex traits.
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