Pic out the correct stataments
(I) Haemophilia is a sex-linked recessive disease
Down's syndrome is due to aneuploidy
(III) Phenylketonuria is an autosomal dominant gene disorder
(IV) Phenylketonuria is an autosomal recessive gene disorder
(V) Sickle-cell anaemia is an X-linked recessive gene disorder

Options

A. I, III and V
B. I and III
C. II and V
D. I, IV and V

Answer

C

Explanation

Hamophilia or bleeder's disease is a sex-linked(X-linked) recessive disease. Down's syndrome is caused due to trisiomy of chromosome 21, i.e. hyperploidy type of aneuploidy Phenylketonuria is an autosomal recessive gene disorder. Sickle-cell anaemia in humans, is also inherited as an autosomal recessive disorder