Blood-type frequencies in a population are A = 41 percent, B = 9 percent, AB = 4 percent, O = 46 percent. Allele frequencies must sum (p + q + r = 1) and population is in Hardy-Weinberg equilibrium for ABO.
What is the frequency of the i (O) allele?
- Acheck_circle
0.68
- B
0.32
- C
0.21
- D
0.46
Explanation
Type O is homozygous ii so freq(ii) = i^2 = 0.46. Therefore i = sqrt(0.46) ~ 0.68.