Hardy-Weinberg Calculator

Calculate allele and genotype frequencies. Test populations for Hardy-Weinberg equilibrium.

Input Method

Example Populations

Observed AA (Homozygous Dominant)

Observed Aa (Heterozygous)

Observed aa (Homozygous Recessive)

Allele Frequencies

0.6000

p (Dominant)

0.4000

q (Recessive)

1.0000

p + q

Genotype Frequencies

0.3600

p² (AA)

0.4800

2pq (Aa)

0.1600

q² (aa)

Expected Counts (n=100)

AA:36

Aa:48

aa:16

Chi-Square Test for Equilibrium

Chi-square (X²):0

Degrees of Freedom:1

p-value:1

Critical Value (α=0.05):3.841

Population IS in Hardy-Weinberg equilibrium (p > 0.05, fail to reject H₀)

Population Distribution

Additional Metrics

Total Alleles:200

Heterozygosity:0.48

p + q = 1 (allele frequencies)

p² + 2pq + q² = 1 (genotype frequencies)

p = freq(A), q = freq(a)

p² = freq(AA), 2pq = freq(Aa), q² = freq(aa)

X² = Σ((O - E)² / E)

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