A woman has a haemophilic son and three normal children. Her genotype and that of her husband with respect to this gene would be
$X X \wedge X^{h} Y$
$X^{h} X^{h} \wedge X^{h} Y$
$X^{h} X^{h}$ and $X Y$
$X^{h} X \wedge X Y$
Which of the following is an example of sex-linked disease?
Select the incorrect statement with regard to haemophilia.
Select the correct match.