Suppose you are alone in your house. suddenly, you hear a crack in the attic. your heart begins to pound and your breathing becomes rapid. which of your body systems controls the "fight or flight" response?

What is genetic variation? -(a) each individual in a population has slightly different genes. -(b) some individuals in a population have more genes than others. -(c) each population of a species has slightly different genes. -(d)some populations of a species have more genes than others.