# If the frequency of the #p# allele is .63 in the population then what is the frequency of the #q# allele?

##### 1 Answer

Jun 3, 2018

#### Explanation:

We use the Hardy-Weinberg equation, which states that,

where:

#p^2 # is the frequency of the homozygous genotype#"AA"#

#2pq# is the frequency of the heterozygous genotype#"Aa"#

#q^2# is the frequency of the homozygous genotype#"aa"#

#p# is the frequency of the dominant allele#"A"#

#q# is the frequency of the recessive allele#"a"#

Since we only need to find the frequency of the

Plugging in for