A) thalassemia
B) night blindness
C) Downs syndrome
D) sickle cell anaemia
Correct Answer: D
Solution :
Gene mutation that involve the substitution, deletion or insertion of a single base pair are called point mutation. Sickle cell anaemia is caused due to base replacement leading to replacement of 6th amino acid in the B-chain. Glutamic acid is replaced by valine and causes sickle cell anaemia.You need to login to perform this action.
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