1.Compare the embryos of chickens, humans and fish, and describe in detail how pharyngeal arches show a shared evolutionary past?.
2.Explain how reproductive barriers result in the development of different species..
3.Explain what is meant by the statement, evolution does not have a goal..
4.Explain why you would or would not expect evolution to proceed more quickly in a rapidly changing environment. Be sure to address all five agents of evolutionary change in your response..
5.Explain, using the illustrations on page 157 of your text, why penicillin, once a widely used and effective antibiotic, is now no longer effective against penicillin-resistant bacteria.