What should you do to test the hypothesis that hair length has been influenced by evolutionary selection?
cotton-topped tamarins are small primates with tufts of long white hair on their heads. while studying these creatures, you notice that males with longer hair get more opportunities to mate and father more offspring.
a. look at the characteristics of male hair in ancestors of tamarins
b. test whether males with shaved heads are still able to mate
c. test whether other traits in these males are adaptive
d. determine if hair length is heritable
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