We should point out that this undoubtedly happens (perhaps much of the
time?), which is why evolution can go so blamed fast (killing critters
is a lot easier than breeding them) at times.
> It would help if someone gave an example of an observed point
> mutation that resulted in better adaptation of a population. This would
> require knowledge of the relevant sequence both before and after the
> mutation, and evidence of superior adaptive traits in the resulting
> organisms.
Some people are immune to AIDS. I'm not sure about the structure of
the genetic difference, though...
-Greg