A population of Poison dart frogs can be red (RR), orange (Rr) or yellow (rr). The allele frequency of the mainland is R: 0.5 r: 0.5. A small group of the frogs moves to an island off the mainland. If the group is composed of 4 red and one orange frog, what would you expect to happen to the allele frequency? A. Increase towards the r allele
B. Stay the same as the mainland
C. Frequency of both alleles would decrease
D. Increase towards the R allele