quote:
Originally posted by Karl:
Jonathan - a single celled organism will never mutate into a housefly, because individual organisms do not evolve - populations do.
Maybe I should have been more clear. For a population that would have been present early on in the stages of life what would a typical evolutionary process be? At what rate would a "population" of flys ,or anything else, evolve? How often did the mutations occur? (over time and per species)
What Im getting at is how do we know what occured and how it worked if no one was there to see it. Just because it "fits" isant good enough. Where is the evidence for it? How can we base a theory on the function of mutations when we dont even know how often the mutations occured? Or for that matter how often a positive mutation occured?