Re: The Pitman CSI Formula
- From: hersheyh <hersheyhv@xxxxxxxxx>
- Date: Fri, 20 Jul 2007 09:15:40 -0700
On Jul 19, 3:44 pm, Seanpit <seanpitnos...@naturalselection.
0catch.com> wrote:
On Jul 17, 2:18 am, Vend <ven...@xxxxxxxxxxx> wrote:
< snip >
Your definition of beneficial structure doesn't work:
Suppose you have three alternative homologous structures: A, B and C.
Suppose that in this enviroment their fitness is in this relation:
fitness(A) < fitness(B) < fitness(C)
A mutation changing A into B is beneficial, while a mutation changing
C into B is detrimental.
So is B beneficial, derimental or neutral?
Obviously you can't tell without knowing what it comes from.
In other words, beneficial, derimental or neutral are not properties
of a structure but they are properties of the change between
structures, that is, mutation.
The beneficial nature of a structure is always related to the organism
in question.
Beneficial is an adjective that can only be applied in a specific
*environment*. That, of course, includes the other genetic/phenotypic
properties of the organism, but is not limited to it.
Removing something that is more beneficial doesn't mean
that what remains isn't beneficial. It is. Removing something that
was more beneficial is characterized as "detrimental", but again, this
characterization is related to the new structural state that is
created. Mutations, by themselves are not "beneficial, detrimental, or
neutral".
Those adjectives are conditional upon environmental circumstances. A
mutation that allows an organism to thrive in the Arctic is rather
useless if the organism is otherwise adapted to life in Amazonia.
Only as they produce or remove structures that are or where
beneficial, detrimental, or neutral can they be classified by such
terms. It is all related to the type of structure produced or
removed.
No. It is related to the how the change in function inteacts with the
environment (including other genes of the organism). The very same
mutation can be 'beneficial', 'detrimental', or 'neutral' conditional
upon environmental conditions. And *loss* of structure can certainly
be 'beneficial'.
Sean Pitmanwww.DetectingDesign.com
.
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