The Hardy-Weinberg Principle

Question 1

How do you predict allele frequency in a population?

Answer 1

p + q = 1
p = frequency of dominant allele
q = frequency of recessive allele

Question 2

How do you predict genotype and phenotype frequency?

Answer 2

p^2 + 2pq + q^2 = 1
p^2 = frequency of homozygous dominant genotype
2pq = frequency of heterozygous genotype
q^2 = frequency of homozygous recessive genotype