Bilateral symmetry and evolution (Talk.Origins)

Claim CB751:

If one eye mutates into existence, then the animal would have just one eye, not two. The same goes for arms, feet, ears, wings, and so forth. Evolution says these body parts should arise one at a time, yet most animals have bilateral symmetry. We do not find one-flippered dolphins or one-eared ape-men.

Source:
 * Pinkoski, Jim. 1993. A Creationist's View of Dinosaurs and the Theory of Evolution. Amazing Facts, Inc., Roseville, CA.

CreationWiki response:

It is agreed that this is erroneous. This claim is not now nor was it ever generally used by creationists. It seems to be exclusive to this source.

Simetría bilateral y evolución (Talk.Origins) Simetria bilateral e evolução (Talk.Origins)