After graduation, you and 19 of your closest friends (10 males and 10 females) charter a plane to go on a round-the-world tour. Unfortunately, you crash (safely) on a deserted island. No one finds you and you all start a new population isolated from the world. 2 of your friends carry (heterozygous for) the recessive cystic fibrosis allele ( c). Assume that the frequency of this allele does not change as the population grows.
A What is the frequency of the recessive allele?
B What is the frequency of the dominant allele?
C In future generations, what is the expected frequency of individuals affected by cystic fibrosis?