1. A chemical agent is found to denature all enzymes in the synaptic cleft. What effect will this agent have on acetylcholine?
2. If neutral variation is truly "neutral," then it should have no effect on
3. Which of the following statements about the immune system is NOT correct?
4. Within a few weeks of treatment with the drug 3TC, a patient's HIV population consists entirely of 3TC-resistant viruses. How can this result best be explained?
5. In the Tularosa Basin of New Mexico are black lava formations surrounded by light-colored sandy desert. Pocket mice inhabit both areas. Dark-colored ones inhabit the lava formations, while light-colored mice inhabit the desert. Which of the following statements is correct about this scenario?
