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Thinking Scientifically
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  1. Caffeine inhibits the breakdown of cAMP in the cell. Referring to figure 42.2, how would this influence a stress response brought about by epinephrine?
  2. Both males and females can develop secondary sex characteristics of the opposite sex if they take enough of the appropriate sex hormone. Hypothesize the pattern of gene inheritance for these characteristics and explain why certain of these genes and not other are expressed.

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