How does a minor biological variance(yet theoretically advantageous one) come to dominate the gene pool... over and over and over again.... millions of times.... to create what we see today? Besides the relatively sparse dramatic environmental change, what fundamental mechanism can explain such consistent "natural selection" for the evolution of life? For example, lets imagine some weird frog-like creature on some hypothetical earth-like planet, billions of years ago. There's millions of these frugs on this planet, and hundreds of other equally weird, young species. One of these frugs has a spot of harder flesh on it's underbelly. It is unique, and will be the basis for a new body part of a new species, billions of years in the future. But let's not worry about the far future of these frugs just yet. For now, how does this minor biological variance (yet theoretically advantageous one) initially come to dominate the gene pool?Please Register or Log in to view the hidden image!