Text 1314, 74 rader
Skriven 2005-01-03 15:01:00 av Anon. (1:278/230)
Ärende: Re: Human Evolution is Ca
=================================


Jim McGinn wrote:
> Anon. wrote:
> 
>>Jim McGinn wrote:
> 
> 
>>>>In the real world sexual selection decreases
>>>>the survival of populations.
>>>
>>>You really ought to think this through before
>>>you put these statements out for the world to
>>>see.  What you are saying here couldn't
>>>possibly be as simplistically true as you state
>>>it here.  It it was then the behavior of sexual
>>>selection could not possibly have persisted.
>>>It would have been weeded out by the process of
>>>natural selection.
>>>
>>
>>I didn't put these statements out: I only brought
>>them to your attention.
>>
>>
>>>[moderator's note: Because selection acts on
>>>populations? - JAH]
>>>
>>
>>I guess that's the point.
> 
> 
> Your point (as you undoubtedly intended) was lost in
> the vagueness of Josh's comment.
> 
> 
>>What this means is that the evolutionary dynamics
>>become more complex, because you have to consider
>>the dynamics at several levels.
> 
> 
> How is this relevant to the issue under discussion?
> 
Because you claim that sexual selection evolved because it is good for 
the population.  The empirical evidence suggests that this is not the 
case - it is actually bad for the population.  In order to understand 
what is really going on, we need to examine selection at the level of 
the gene (i.e. the genes involved in both the signalling by the male, 
and the reception of the signal by the female), the individual (does the 
signalling have an effect on direct fitness?), and the population (do 
the effects on individual selection have a significant effect on the 
population dynamics?).

Bob

-- 
Bob O'Hara
Department of Mathematics and Statistics
P.O. Box 68 (Gustaf Hällströmin katu 2b)
FIN-00014 University of Helsinki
Finland

Telephone: +358-9-191 51479
Mobile: +358 50 599 0540
Fax:  +358-9-191 51400
WWW:  http://www.RNI.Helsinki.FI/~boh/
Journal of Negative Results - EEB: www.jnr-eeb.org
---
ū RIMEGate(tm)/RGXPost V1.14 at BBSWORLD * Info@bbsworld.com

---
 * RIMEGate(tm)V10.2á˙* RelayNet(tm) NNTP Gateway * MoonDog BBS
 * RgateImp.MoonDog.BBS at 1/3/05 3:01:42 PM
 * Origin: MoonDog BBS, Brooklyn,NY, 718 692-2498, 1:278/230 (1:278/230)