How to Calculate Allele Frequency
What is Allele Frequency?
Allele frequency is the relative proportion of a particular allele among all alleles of a gene in a population. Together with Hardy-Weinberg, it forms the foundation of population genetics.
Step-by-Step Guide
- 1p = (2×AA + Aa) / (2×N)
- 2q = 1 − p
- 3Total alleles = 2 × N individuals
Worked Examples
Input
40 AA + 40 Aa + 20 aa (N=100)
Result
p = 0.6 · q = 0.4
120 A alleles out of 200 total
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