On 27 Feb 1997 06:21:40 -0800 PROFDHW at aol.com wrote:
>>In a message dated 2/27/97 2:47:00 AM, John Hewitson wrote:
>>>* Natural selection does not support a structure unless it confers some
>>advantage. Agreed?
>>>Natural selection cannot eliminate a structure (or function) which is neutral
>with regard to fitness. This must be left to chance.
Also remember what may be an advantage today may not be in future
environments, "desent with modification" means you are often stuck with previous
"design" solutions. If there is not fitness disadvantage not mechanism to remove
(except randomness).
Dr Kevin Reiling
Division of Biology
Staffordshire University
ST4 2DE
01782 294746
