TomHendricks474 wrote:
> << What is evolution if it isn't temporal variation, too?  Indeed, the 
> standard definition of evolution could be summarised as "temporal 
> variation, nothing more or less" as well.
> 
> Bob >>
> 
> 
> But can we go further and say 
> 'what isn't genetic drift (in the most broad sense of the word)
> 
Well, we could use a diffusion model, in which drift wouldn't be drift.

Sorry, I couldn't resist.  To translate, selection would be the 
difference between the expected allele frequencies at two times points.

The "expected allele frequencies" are the mean allele frequencies if we 
replicated the experiment/observations many times (this is not a precise 
definition - but I hope you undersand the idea - I don't want to get 
sidetracked into discussing the philosophy of statistics).

Bob

-- 
Bob O'Hara

Dept. of Mathematics and Statistics
P.O. Box 4 (Yliopistonkatu 5)
FIN-00014 University of Helsinki
Finland
Telephone: +358-9-191 23743
Mobile: +358 50 599 0540
Fax:  +358-9-191 22 779
WWW:  http://www.RNI.Helsinki.FI/~boh/
Journal of Negative Results - EEB: http://www.jnr-eeb.org
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