OpenStudy (anonymous):

In a population of tree frogs, the allele that causes yellow eyes (Y) is dominant over the allele that causes orange eyes (y). If 85% of the frogs have yellow eyes, what is the frequency of the dominant allele?

5 years ago
OpenStudy (anonymous):

Hardy Weinburg equilibrium

5 years ago
OpenStudy (blues):

The Castle Hardy Weinburg equation is$1 = p^2 + 2pq + q^2$ and you are given that p^2 + 2pq (that is, all the individuals with the dominant phenotype) equals 0.85. Which gives you q, the frequency of the recessive allele, very easily...$1 - 0.85 = q^2$ And once you have q, you can find p, which is what the problem asks for...$p = 1 - q$

5 years ago