Re: Relaxed Selection, a b-level posting

Posted by Douglas Roberts-2 on
URL: http://friam.383.s1.nabble.com/Relaxed-Selection-a-b-level-posting-tp1315075p1318076.html

On Fri, Oct 10, 2008 at 4:24 PM, Marcus G. Daniels <[hidden email]> wrote:

Phil Henshaw wrote:

We could consider the vast variation in
canine breeds and the fact that breeding selection as an extreme form of
epigenetics has not apparently altered the species they all belong to.
 

Selection from breeding would mostly be constrained genetics, i.e. a big and a small dog could be discriminated by, say, an insulin allele, say (http://www.sciencemag.org/cgi/content/abstract/316/5821/112).
However in epigenetic case we are talking about an inherited but non-genetic change.

Perhaps the question is how environmental pressures and experience may
clearly influence genetics, but be insufficient to originate the kind of
somehow deeper genetic change that creates new forms of life.   Among other
things it points to a distinct difference between 'shallower' and 'deeper'
genetic change indicating that some form of structure other than noisy
aggregations may be present.
 

Seems to me that everything from epigenetic gene regulation changes to horizontal gene transfer is happening at the bacterial level..  What is the question?

You know, not to sound too harshly judgmental, or anything, Marcus...

But:  you do seem to be in direct violation of rule #2 of the FRIAM posting guidelines which, like rule #1 reads

"Second rule of FRIAM: no one talks about specifics."

--
Doug Roberts, RTI International
[hidden email]
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