Q. The incorrect statement with regard to haemophilia is :
(a) It is a recessive disease
(b) It is a dominant disease
(c) A single protein involved in the clotting of blood is affected
(d) It is a sex-linked disease
Solution :
Correct option : B Haemophilia is a group of hereditary genetic disorders that impair the person’s ability to control the blood clotting. It is recessive, sex-linked, X-chromosome disorders. Thus, the correct answer is option B.