Hardy-Weinberg Calculator
Chemistry & BiologyPredict expected genotype frequencies in a population at genetic equilibrium from an allele frequency.
AA Frequency
Expected percentage of the population that is homozygous dominant (AA), p squared.
Recessive Allele Frequency (q)
0.2000
Recessive allele frequency, q = 1 - p.
Aa Frequency
32.00
Expected percentage of the population that is heterozygous (Aa), 2pq.
aa Frequency
4.00
Expected percentage of the population that is homozygous recessive (aa), q squared.
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Odeh Ahwal0people find this calculator helpful
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Chemistry & Biology calculators
Frequently Asked Questions
What is the Hardy-Weinberg equation?
The Hardy-Weinberg equation, p squared plus 2pq plus q squared equals 1, predicts the expected genotype frequencies in a population that is at genetic equilibrium, meaning it is not evolving with respect to that gene.
What does genetic equilibrium require?
A population stays at Hardy-Weinberg equilibrium only under idealized conditions: no mutation, no migration, random mating, a very large population, and no natural selection acting on the gene. Real populations rarely meet every condition exactly, so the equation is normally used as a comparison baseline.
How does this relate to the allele frequency calculator?
This calculator goes from an allele frequency to expected genotype frequencies. The allele frequency calculator does the reverse, starting from genotype counts and calculating the allele frequencies behind them.
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