27. Blood group antigens are
[A] carried by sex chromosomes
[B] attached to plasma proteins
[C] attached to hemoglobin molecules
[D] attached to RBCs
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Explanation:
Blood group antigens are either sugars or proteins, and they are attached to various components in the red blood cell membrane. For example, the antigens of the ABO blood group are sugars. They are produced by a series of reactions in which enzymes catalyze the transfer of sugar units.
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Answer:
may be the first one is correct
(A)
is your ans
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