Important factors of Beak stimulation

Mutation rate is an important parameter to obtain a bimodal distribution because a higher mutation rate allows for finches on each side of the mountain to mutate so that there are varying beak sizes without a mutation rate then on each side of the mountain there would be a fixed beak side, and for genes to be lost but random mutation allows for alleles to be present in the populations. Mate selectivity and mate distance are two important parameters to obtain and maintain a bimodal distribution. A larger mate distance caused a bell curve therefore indicating that a finch’s beak size is influenced by the distance of mating. Also a higher mate selectivity showed that the beak size is influenced by how finches mate with other finches with similar looking traits. When these two parameters work together there is a greater selection of beak sizes.