- Compare the embryos of
chickens, humans and fish, and describe in detail how pharyngeal arches show
a shared evolutionary past?
- Explain how reproductive
barriers result in the development of different species.
- Explain what is meant by
the statement, evolution does not have a goal.
- 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
- 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
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