Biology / Unit 8 Bio 1739 short lesson, about 20 seconds
Allele Frequency
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The idea
Allele frequency is the proportion of all copies of a gene in a population's gene pool that one specific allele accounts for.
In practice
Counting a specific allele's copies and dividing by the total gene copies across the whole population gives its frequency.
Where people slip
Allele frequency describes the whole gene pool, per Bio 1689 — not the fraction of individuals who are heterozygous or homozygous.
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