Another quotable bit: ``Darwinian selection remains the only explanation for adaptive evolution - and it is arguable (I would argue) that most if not all the evolutionary changes we actually see in the macroscopic world (as opposed to those concealed among the molecules) are adaptive and Darwinian.'' - A Devil's Chaplain, p.85. I'm not sure about the "all" but I'm inclined to agree with the "most". Drift may have something to say about small populations on islands around speciation events - but it's probably a bit player in most other places - as far as the *features* of organisms go (as opposed to the makeup of their genes). -- __________ |im |yler http://timtyler.org/ [email protected] Remove lock to reply.