There are a gazillion websites that discuss all these biological matters at length, why an in-depth discussion of matters out of the depth of many of you (judging from your posts) is appropriate here is a head-scratcher. To get a handle on any of these complex arguments takes literally years, and even then you only get a personal sense of which way your sentiment lies; there are good and sophisticated arguments on all sides of these issues, as well as numerous charlatans and snake-oil salesman on both sides (many of them with impressive credentials). As for me, I am deeply skeptical of most of the grander claims of neo-darwinism, as well as the explanations of creationists. I think nobody really understands the aggregated data, especially the paleontological(fossil)evidence. My religious beliefs are simply not cowed by evidence which, quite frankly, nobody has any hope of explaining adequately.