Invasive species arrive in new locations with adaptations that make them fit the new environment, and when they arrive, they experience rapid population growth. Explain how it is possible for a trait to confer fitness BEFORE the organism benefits from that trait.

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.