Pick out the correct statements.
I. Haemophilia is a sex-linked recessive disease. II. Down.s syndrome is due to aneuploidy. III. Phenylketonuria is an autosomal recessive gene disorder. IV. Sickle-cell anaemia is an X-linked recessive gene disorder.

Options

A. II and IV are correct
B. I, III and IV are correct
C. I, II and III are correct
D. I and IV are correct

Answer

C

Explanation

I, II and III are correct