As per Hardy Weinberg Principle, in a population mating in a random manner without any evolutionary force, the allele frequencies remains constant from generations to generations
Thus, sum of P and Q,
P = frequency of common allele
Q = Frequency of less common allele
Remains constant.
P + Q = 1
If P = 0.68
Then Q = 1- P
= 1- 0.68
= 0.32
