Sickle cell anemia is due to transversion mutation in which :

Options

A. Instead of glutamic acid , valine comes at number `6^(th)` position in one of `beta` chain of Hb
B. Instead of valine , glutamic acid is inserted at number `6^(th)` position of `beta` chain of Hb
C. Valine is inserted at number `6^(th)` position in `alpha` chain of Hb
D. Glutamic acid is substituted by valine at number `6^(th)` position of `alpha` - chain of Hb

Answer

A