Sickle-Cell-Anemia

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Which of the modification in hemoglobin is the cause of sickle cell anemia?
A. A mutation in the beta chain
B. A deletion in the beta chain
C. Replacement of the B chain by D chain
D. None of the above
    Answer:A

During sickle cell anemia which of the following takes place?
A. Glutamine change to valine
B. Valine change to glutamine
C. Aspartic acid change to glutamic acid
D. Glutamic acid change to aspartic acid
   Answer:A

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