I AM fairly SCARED!!!!

Martinez Hewlett hewlett at brahms.biosci.arizona.edu
Tue Nov 8 12:59:50 EST 1994


From: pretotr
Date: 4 Nov 94 11:17:29 MET
In article <1994Nov4.111729.44140 at yogi> , pretotr at urz.unibas.ch writes:
>Hmm, doesn't little variation indicate a high selective pressure?!
>I would expect to see great variation, only when there is not much 
>selective pressure.
>
>Any comments?

The original post refered to "evolutionary pressure" which I interpreted
as meaning a great number of variants would arise.  You are correct that
growth in laboratory environments is high selective pressure.  My point
is that few variants arise as a result of this pressure.

Martin Hewlett
Dept. of Molecular and Cellular Biology
University of Arizona
Tucson, Arizona



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