But even if there were no unknown design constraints on the gene for cytochrome c, how could one be sure that God would not conserve codon sequences when creating cytochrome c gene in separate species? After creating the cytochrome c gene in the first organism, it certainly is conceivable that he would make changes to that blueprint only when necessary for his purpose. In other words, the default in this instance may be similarity rather than dissimilarity. Again, there is no basis for demanding that God introduce novelty for novelty’s sake.
From that perspective, it is the differences in the cytochrome c gene that need to be explained, not the similarities. One creationist explanation for those differences is that various cytochrome c genes were created differently for functional reasons and then diverged further as a result of mutations (whereas the evolutionist attributes the differences entirely to mutation.)