A) Glutamic acid for valine in the alpha chain
B) Glutamic acid for valine in the beta chain
C) Valine for glutamic acid in the alpha chain
D) Valine for glutamic acid in the beta chain
E) None of these
Correct Answer: D
Solution :
The sixth amino acid in
chain of normal haemoglobin is glutamic acid. In sickle cell haemoglobin this amino acid is replaced by valine.
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