Match List – I with List – II.
| List - I | List - II |
| (A) Thalassaemia | (I) Absence of one X chromosome |
| (B) Phenylketonuria | (II) Inborn error of metabolism |
| (C) Down's Syndrome | (III) Autosomal recessive blood disease |
| (D) Turner's Syndrome | (IV) Presence of an additional copy of the 21st chromosome |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (A) - (III), (B) - (II), (C) - (IV), (D) - (I)
(A) Thalassaemia — this matches (III) Autosomal recessive blood disease. Less globin is made.
(B) Phenylketonuria — this matches (II) Inborn error of metabolism. Phenylalanine is not converted to tyrosine.
(C) Down’s Syndrome — this matches (IV) Presence of an additional copy of the 21st chromosome. Trisomy 21.
(D) Turner’s Syndrome — this matches (I) Absence of one X chromosome. 45, X0.