But if two "proto-species" do not reproduce with each other, even if they physically could, they will most likely continue to adapt independently and may well end up unable to interbreed.godslanguage wrote:For the species creation part, Darwinian Evolutionists will tell you a "new" species have been created. They will point to evidence such as experiments with fruit-flies (one of the major ones), the so-called "evolved" fruit-fly population y could not interbreed with pre-existing fruit-fly population x, thereby the fruit-fly population y are rendered a "new" species. The experiments reveal however, that they did not want(a decision) to interbreed, not that they could not, thats a huge difference. Another point to consider is that anything that is freely reversible is not evolution, if its irreversible then its evolution, however none of these types of experiments have shown irreversibility.
As far as reversibility is concerned, interbreeding is the most likely cause of reversing. Anything that interferes with the likelihood of interbreeding (lack of interest, geographical obstacles, behavioral differences, etc) will tend to decrease the possibility of reversal over time.