• We should expect that species show genetic variation for many traits (otherwise there would be no possibility of evolution happening).
What? Evolution predicts genetic variation? How does the idea that mutations create new information predict genetic variation? That's silly. Clearly from observing the finches and from observing animals and people over the last few thousand years, we knew that there was genetic diversity. Why else would a son look different than his father and mother yet the same? Evolution does not predict genetic diversity - it may assume it - but that isn't the same thing.
