Table 1 Observed and expected genotype counts for an X-chromosomal marker under Hardy–Weinberg equilibrium

From: Testing for Hardy–Weinberg equilibrium at biallelic genetic markers on the X chromosome

Genotype

Males

Females

 

A

B

AA

AB

BB

Probability

φp A

φ(1−pA)

(1−φ)pA2

2(1−φ)pA(1−pA)

(1−φ)(1−pA)2

Observed

m A

m B

f AA

f AB

f BB

Expected

n φ̂ A

n φ̂(1−A)

n(1−φ̂)A2

2n(1−φ̂)A(1−A)

n(1−φ̂)(1−A)2