Thick-skinned rhinoceroses and elephants were once classified together as pachyderms. They actually descended from different ancestors that in turn evolved from a thin-skinned common ancestor that was not included in the pachyderms. Pachyderms were therefore, as a taxon,
A. polyphyletic.
B. polygenetic.
C. paraphyletic.
D. a supergroup.
E. a kingdom.
A. polyphyletic.
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Which method is used to visualize proteins separated by gel electrophoresis?
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