Final answer:
To calculate allele frequency from incidence rate, you can use the Hardy-Weinberg equilibrium equation or calculate it based on genotype frequencies in a population.
Step-by-step explanation:
To calculate allele frequency from incidence rate, you need to have information about the genotype frequencies in a population.
One way to calculate allele frequency is to use the Hardy-Weinberg equilibrium equation: p² + 2pq + q² = 1, where p represents the frequency of allele A and q represents the frequency of allele a.
Another way to calculate allele frequency is to divide the number of copies of a specific allele by the total number of copies of the gene in the population. For example, if you have 100 individuals with genotype AA, 200 individuals with genotype Aa, and 100 individuals with genotype aa, then the frequency of allele A would be (2 * 100 + 200) / (2 * 100 + 200 + 2 * 100), which simplifies to 0.5.