Question

At which point on the graph is the frequency of the recessive homozygote lowest?

Answer 1

The frequency of the recessive homozygote is lowest where the dominant allele is most common.

Step-by-step explanation:

Based on the information provided, the frequency of the recessive homozygote will be lowest at the point where the frequency of the recessive allele (q) is lowest. This occurs when the frequency of the dominant allele (p) is highest.

Using the Hardy-Weinberg formula (p² + 2pq + q² = 1), we can calculate the frequencies of the heterozygotes (2pq) and the dominant homozygotes (p²). Since the recessive homozygotes (q²) are the complement of the dominant homozygotes, the point where they are lowest is also the point where the dominant homozygotes are highest.

In other words, the frequency of the recessive homozygote is lowest where the dominant allele is most common.