In the formula for determining a population's genotype frequencies, the "2" in the term 2pq is necessary because ________.
A) the population is diploid
B) heterozygotes can come about in two ways
C) the population is doubling in number
D) heterozygotes have two alleles

Question

Quizplus · Accepted Answer

The "2" in the term 2pq accounts for the fact that heterozygotes (e.g., Aa) can be formed in two different ways: one allele from the first parent and the other from the second parent, or vice versa.

In the Formula for Determining a Population's Genotype Frequencies, the "2