Understanding HWE is useful in the world of public health for tracking how diseases move throughout a population. A common application of HWE that appears on exams is 1 the calculation of blood types, which would require the addition of another factor in the HWE equation to account for all the possible phenotypic blood types, A, B, AB, and 0. The genotypes for blood would therefore be AA, AO, BB, BO, AB, and 00 (it). These would require the following equations: p + q + r = 1, so p? + q* + ? + 2(0) + 2(a) + 2(pr) = 1. If 5% of a population has AB blood, what factor in the above equation would represent the AB codominant condition? the calculation of blood types, which would require the addition of another factor in the HWE equation to account for all the possible phenotypic blood types, A, B, AB, and 0. The genotypes for blood would therefore be AA, AO, BB, BO, AB, and OO (it). These would require the following equations: p+q+r= 1, so pº + q* + r + 2(g) + 2(90) + 2(pr) = 1. If 5% of a population has AB blood, what factor in the above equation would represent the AB codominant condition?