The Problem with Christians

[Angrboda]

How does a fish turn its fins into legs? That would require a great deal of rewriting of the genes that code for that part of the body, not to mention having to create new code to produce the necessary nerve and blood supply and the requisite muscles to support walking. All of these mutations are big! And you have to have a stack of them to make the the transition successful.

Um, the muscles, bones, blood and nerve supply are already in place, they simply need minute adjustments over time. Many small adjustments equals a big change. Look at Tiktaalik for example. Only modest changes from precursor species, and the species which followed also displayed minor changes to the limbs in question. For someone who studied anatomy, you sure don't know much biology.