Class 12th Biology 2016 Set2 Delhi Board Paper Solution

Question 3

Give an example of a human disorder that is caused due to a single gene mutation.

Answer

Sickle-cell anaemia  is a human genetic disorder caused by a single gene mutation. In Sickle-cell anaemia glutamic acid (Glu) at the 6th position of beta globin chain (of haemoglobin molecule) is replaced by valine (Val).