Question

Pick out the correct statements (a) Haemophilia is a sex-linked recessive disease (b) Down syndrome is due to aneuploidy (c) Phenylketonuria is an autosomal recessive gene disorder (d) Sickle cell anaemia is X-linked recessive gene disorder.

• A. a, b and c correct
• B. a and d are correct
• C. b and d are correct
• D. a, c, d are correct

Answer 1

The correct option is A a, b and c correct

(a) Haemophilia is a sex-linked recessive disease

(b) Down syndrome is due to aneuploidy

(c) Phenylketonuria is an autosomal recessive gene disorder

(d) Sickle cell anaemia is $Autosomalrecessive$ gene disorder.
So, option A is correct.