b) Imagine that you are conducting tests shortly after a nuclear accident. Using potted moss plants as you experimental organisms, design an experiment to test the hypothesis that the frequency of mutations decreases with the organism’s distance from the source of radiation.

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.

What process creates gametes? a.fertilization b.mitosis c.meiosis

Which factor is difficult to assess in a cost-benefit analysis