10. Remember how we mentioned that the dichotomous key we provided was only designed for use with organisms A-E in the chart? If we add another organism such as the cat below, you will find that the dichotomous key cannot arrive at the scientific name, Felis catus, for this cat. In the space below, please redesign the dichotomous key so that it includes the cat. You can still reuse steps as the key should now be able to arrive at all organisms A-F.

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.