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Date: 2007/01/26 17:44:12, Link
Author: dtheobald
Quote (Cornelius Hunter @ Jan. 26 2007,17:14)
I'll restate the question in more acceptable terms. How is it that similarities such as the pentadactyl pattern are such powerful evidence for evolution, in light of equala and greater levels of similarity in distant species, such as dsplayed in the marsupial and placental wolves? Please look at the very bottom here:

Then look at here:

And then consider my question, and explain why similarities such as the pentadactyl pattern are such powerful evidence.

The difference is simple.  In one case we have structural similarity that has a functional explanation (wolves).  In the other case, we have the much more puzzling phenomenon of structural similarity in spite of functional diversity (pentadactyl limbs).  This latter problem is what common ancestry explains, quite elegantly.  Hence it is this latter type of similarity that is evidence for evolutionary homology.