Question Detail
Question
How many genotypes are produced by the 4 human blood groups: A, B, AB and O? A. 4 B. 6 C. 10 D. 8
Correct Answer
Option B is the correct answer.
Detailed Explanation
With three alleles (I^A, I^B, i), the number of possible genotypes is given by n(n+1)/2, where n is the number of alleles. So, 3(4)/2 = 6. The six genotypes are: I^A I^A, I^A i, I^B I^B, I^B i, I^A I^B, and i i.
Hint
Number of genotypes = number of combinations with repetition.