Which statement about allele frequencies is true?
A) It is possible to have a negative allele frequency.
B) Allele frequencies can be greater than 1 in some populations.
C) The sum of all allele frequencies is 0.
D) The sum of all allele frequencies is 1.
E) All alleles have the same frequency.

Question

Quizplus · Accepted Answer

The sum of all allele frequencies in a population must be 1 because an individual can only have two alleles for a particular gene and there are no other possibilities for the frequency of those alleles. Therefore, the total frequency of all possible alleles must add up to 1. Option A is false because allele frequencies cannot be negative. Option B is incorrect because allele frequencies cannot be greater than 1. Option C is also incorrect because the sum of all allele frequencies cannot be 0. Option E is incorrect because not all alleles have the same frequency.

Which Statement About Allele Frequencies Is True