Differentiating Tissue Functions QUICK CHECK
Match the following functions to the correct type of tissue.
muscle tissue movement and circulation
control and coordination
stability and support
muscle tissue
nervous tissue

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.