4.Describe the three types of selection: directional, stablizing and disruptive.

Directional selection is a type of selection that removes individuals from one end of a phenotype distribution and thus causes a shift in the distribution. Selection that changes the frequency of an allele in a constant direction, either toward or away from fixation for that allele. A stabilizing selection is a type of selection that removes individuals from both ends of a phenotype distribution thus maintaining the same distribution mean. Lastly, disruptive type of selection that removes individuals from the center of a phenotype distribution and thus causes the distribution to become bimodal. Examples for all these are rabbits.