Sickle-cell anemia is caused by a point mutation in the beta-globin ge…

Question

Sickle-cell anemia is caused by a point mutation in the beta-globin gene that substitutes:

Accepted Answer

D. {'text': 'Valine for glutamate', 'label': 'D'}

A single base change in the beta-globin gene replaces glutamate (Glu) with valine (Val) at position 6, producing HbS. This is the classic missense point mutation in NCERT.

Answer

{'text': 'Glutamate for valine', 'label': 'A'}

Answer

{'text': 'Lysine for arginine', 'label': 'B'}

Answer

{'text': 'Methionine for valine', 'label': 'C'}