If father shown normal gentype and mother shown a carrier trait for haemophilia then :

Options

A. Female offspring has probability of 50% to have active disease
B. All the female offspring will be normal
C. All the female offspring will be carriers
D. A male offspring has 50% chances of active disease

Answer

D

Explanation

Haemophilia is an X-linked recessive disease and is always transmotted from mother to son. Thus , if father shows normal genotype and mother shows a carrier trait for haemophilia, Then the male offspring has 50% chances off active disease