Question

Which one of the following statements is true for the ABO classification of blood?
(A)AB group is a universal receptor.
(B)AB group is a universal donor.
(C)A group can accept B and O groups.
(D)B group can accept A and O groups.

Answer 1

Hint: The particular individual of a specific blood group can receive only that particular group blood because if the blood group is not matching, antigen and antibody can react and will make the clot. AB blood type has both the antigens present on their RBCs.

Complete answer:
AB blood group is a universal receptor. A person with blood type AB is taken into account as the universal recipient as he can receive blood from any blood type. This is often possible as he or she contains both the antigens and no antibodies within the plasma.

Additional Information: Codominance is the condition where neither allele can mask the expression of the other, that is, neither allele is completely dominant, hence they are both expressed together.
- Codominance is a heterozygous condition in which both alleles at a gene locus are fully expressed in the phenotype. The most common example of codominance is observed in the ABO blood group system. There are different versions of a gene that expresses proteins appearing on the surface of RBCs. They are A, B, and O. All of these alleles are identified by our body as its own. The progeny of a parent having A blood type and a parent having B blood type will show the AB blood type where both the proteins are expressed on the surface of the RBCs.
So, the correct answer is ‘AB group is a universal receptor’.

Note: The O blood types are very unique. They have no antigens present on their RBC. O negative blood is taken into account the universal donor type because it's compatible with all A, AB, B, and O positive blood types.