Which of the following occurs when a small group of individuals leaves a population and establishes a new one in a geographically isolated region?
A. Genetic drift
B. Natural selection
C. Non-random mating
D. Gene flow

If you were given a map of the sensory cortex in the postcentral gyrus of the cerebrum, do you think the map would have more “space” devoted to the regions of the body that have the highest density of sensory receptors, or the regions of the body that have the lowest density of sensory receptors? explain.