Question

You are studying skin color in a population of frogs at Lake Johnson. Your original population of 350 frogs had green allele frequency of 0.24. An animal rights student group "rescued" 50 lab frog that had a green allele frequency of 0.62 and released them into Lake Johnson where they mixed with your population. What is the frequency of the green skin allele in the population after migration? Please round your answer correctly to 4 decimal digits. Answer:

Answer 1

Number of frogs with green allele in the population of frogs at lake Johnson before migration = green allele frequency x total number of frogs = 0.24 x 350 = 84

Number of frogs with green allele in rescued frogs = green allele frequency x total number of frogs = 0.62 x 50 = 31

Therefore, after migration

Frequency of green skin allele = total number of frogs with green skin allele / total population after migration

= (84 + 31) / (350 + 50) = 115 / 400 = 0.2875