A haemophilic female marries a normal male. W | vedclass

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(C) Haemophilia is an $X$-linked recessive disorder. Let $X^h$ represent the haemophilic allele and $X$ represent the normal allele.The genotype of a

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All sons are haemophilic

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(C) Haemophilia is an $X$-linked recessive disorder. Let $X^h$ represent the haemophilic allele and $X$ represent the normal allele.The genotype of a haemophilic female is $X^h X^h$ and a normal male is $XY$.When they cross: $X^h X^h 	imes XY$.The possible genotypes of the offspring are $X^h X$ (carrier daughter) and $X^h Y$ (haemophilic son).Therefore,all sons will be haemophilic,and all daughters will be carriers.

$A$ haemophilic female marries a normal male. What will be the theoretical ratio of their offspring regarding haemophilia?

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