B. differs from the normal protein by one amino acid
C. can carry less oxygen and more carbon dioxide
D. is normal
The hemoglobin of sickle cell anemia differs from the normal protein by one amino acid i.e., glutamic acid is replaced by valine.
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The hemoglobin of a sickle cell anemia: C.
A sickle cell is when it runs out of oxygen and only carries CO2 which can cause many health problems in the body.
b. dyes
c. rubber
d. all of the above