🧬ap biology review

Allele Frequency

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

Allele frequency refers to how common an allele is in a population. It is determined by dividing the number of times an allele occurs in a population by the total number of copies of all alleles for that gene in the same population.

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