ES121 Take out a sheet of paper. clear everything else off of your desk. When you are done you may silently pack up and stand behind your chair.
ES True or False? Genetic variation occurs only in mammals. 2. True or False? Organisms mutate purposefully to increase chances of survival. 3. What causes genetic variation? 4. Give an example of genetic variation. 5. Give an example of an environmental change that might make one genetic variation more successful in a population.