A) \[{{\text{I}}^{\text{A}}}{{\text{I}}^{\text{O}}};\] Blood type A
B) \[{{\text{I}}^{\text{A}}}{{\text{I}}^{B}};\] Blood type AB
C) \[{{\text{I}}^{B}}{{\text{I}}^{\text{O}}};\] Blood type B
D) \[{{\text{I}}^{\text{O}}}{{\text{I}}^{\text{O}}};\] Blood type O
Correct Answer: A
Solution :
Blood groups are inherited from our biological parents in the same way as eye colour and other genetic traits. Within the ABO blood group system, the A and B genes are co-dominant, ie, these will be expressed whenever the gene is present. The O gene is silent and only expressed when neither A nor B is present.
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