Critical Thinking Activities - Chapter 20

1. What would happen if you injected an early female embryo of a mouse with large amounts of testosterone?
2. Besides intense physical activity, what other behaviors can you think of which might induce amenorrhea?
3. If a man has prostitis, what two major physical activities will be impaired?
4. A previously infertile couple wishes to have a pregnancy but the man produces non-motile sperm. If it were possible to fertilize one of the woman's eggs by removing a sperm nucleus and injecting it into the egg, could this procedure ever produce viable offspring? Why or why not?
5. How is it that injecting progesterone into a woman will prevent ovulation?
6. Sometimes when a baby is feeding on one breast, the other breast begins to produce milk too. Why?

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