You're interested in the genetics of earlobe shape on your campus. Free (unattached) earlobes are caused by a dominant allele. The attached earlobe phenotype is caused by a recessive allele. Individuals with free earlobes have either a homozygous genotype or a heterozygous genotype. Assuming that your college campus is a stable population, what calculation would you use to determine the percentage of students who have a heterozygous genotype for earlobe shape?

Question

Quizplus · Accepted Answer

To find the percentage of heterozygous individuals, you can use the Hardy-Weinberg principle. First, calculate the frequency of the recessive phenotype (attached earlobes) to find the recessive allele frequency (q). Then, use 2pq to find the percentage of heterozygous individuals.

You're Interested in the Genetics of Earlobe Shape on Your