A) Six
B) Three
C) Four
D) Five
Correct Answer: C
Solution :
In ABO blood group system, inheritance of grouping is controlled by a single autosomal gene on chromosome-9 with three major alleles A, B and O \[\text{(}{{\text{I}}^{\text{A}}}\text{,}{{\text{I}}^{\text{B}}}\text{and}\,{{\text{I}}^{\text{O}}}\text{)}\] . The ABO blood group system has at least 6 genotypes. On the basis of presence or absence of antigens and antibodies, 4 blood groups (phenotypes) have been differentiated, ie. A, B, AB and O blood groups.You need to login to perform this action.
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