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Question: Answered & Verified by Expert
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.
BiologyPrinciples of Inheritance and VariationNEET
Options:
  • A (i) and (iv) are correct
  • B (ii) and (iv) are correct
  • C (i), (iii) and (iv) are correct
  • D (i), (ii) and (iii) are correct
Solution:
2896 Upvotes Verified Answer
The correct answer is: (i), (ii) and (iii) are correct
Haemophilia is a sex-linked recessive disease in which there is a problem in clotting of blood.

Down's syndrome (trisomy 21) is caused due to aneuploidy.

Phenylketonuria is an autosomal recessive gene disorder.

Sickle cell anaemia is autosomal recessive gene disorder.

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