You are a scientist who notices great similarity between the spines of a hedgehog and the spines of a porcupine. when you study their genetics, however, you notice that the set of genes that code for hedgehog spines is a different set of genes than the set that codes for porcupine spines. you decide this must be an example of:
a. convergent evolution
b. divergent evolution
c. coalescent evolution
d. unifying evolution