<<  Thus I assume that the evolution speed essentially depends on 
three factors:  * the selection pressure * the mutation frequency 
(mutation rate) and * generation time.  >>



As to selection pressure, I suggest this model.

As environmental adaptation increases
stabilizing selection increases
and
disruptive and diversifying selection decreases

and vice versa
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 * RgateImp.MoonDog.BBS at 4/24/04 6:07:35 AM