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Author Topic:   What exactly is natural selection and precisely where does it occur?
Brad McFall
Member (Idle past 5062 days)
Posts: 3428
From: Ithaca,NY, USA
Joined: 12-20-2001


Message 34 of 303 (389335)
03-12-2007 8:57 PM
Reply to: Message 21 by Fosdick
03-11-2007 8:09 PM


Re: When does NS apply pressure?
Well, you are certainly not talking about "evolution" my grandfather passed down to me and the concept I can recognize in my parents generation as an essay response to nature vs nurture and the one that I can recognize Gould tried to write beyond. You are talking about something that only the modern digital/academic world could contemplate.
If you wish to give up on the idea of the "evolutionary individual" and the 'plurifaction' of genetic possibility taken adavantage of by the next generation of students of biology I fear you have cashed out, through Von Neumann's brain power and memory, the phenotype problem of the 60s (neutral evolution etc)that gave strength to our present disagrement (in this and the thread this thread gave rise from) over the focus of selection beyond the simple US vs UK preferences into one that only your avatar would not form a culture of blinking towards.
You are strugggling with the various proposals of hierarchy in biology. Gould for instance did not accept Eldridge's division of geneological and economic hierarchies, Gladsyhev added another one and then there is the simple level of organization issue. If it is true that memes died out because people could not really communicate over them then it seems that your inclination is on *that* side of the discussion.
It may indeeed be possible to reduce selection at the level of the individual for a compressed divide to an encoded smaller entity but why did you not recognize this traditional history which you surely must extripate before your notion would be commonplace. Is it simply because you wanted to speak about the the thought that HW may not occurr in a lot of populations??
If that were the case then why did you not discuss Fisher's ideas vs Wright's where instead one DOES have the issue of speciation with the maths dependent on population structure vs. a large random breeding population??
It seems to me the only reason that UK biologists prefer selection over what one often can hear from US biologists is that like the idea that Whitehead said, UK is for the sea, France the land and Germany the clouds(+/-), the British by sticking with the individual would never drown, the French DID criticze Wrignt at area polymorphisms but made it topological/psychiatric while the Germans with Henning simply opened a bit the level difference for a programmer without providing the goal.
Only a meme can communicate that biologically and yet these died out in the technical literature (look at the rise and fall of papers published on memes) so if the culture can not support the reduction the only hope is Wolfram, but so far his ideas would not even stand inside of this, as far as I think about reductionistically and BEYOND what I was taught traditionally.
Why? because the analysis has not been carried to the extreme and the simple reductionist prejudice is in it's place.
If the individual is the vehicle then ANY hierarchy must be addressed and you did not do this with higher, lower, individual, kin, gene but your's remained within the phenotype debate itself and thus you subjected your hierarchy to the evolutionary individual at best but at worst you would need to intricate the kin to the gene to a higher level by showing in detail the difference of sexual selection in plants vs animals, no matter the adaptation, IN TERMS OF WHAT OLD selection language needs replacing with what reductionism but I can neither cognize that physical case nor imagine any physical phenomenon that that would envelope. If you can feel free to say so as I would love to logos my biological organon.

This message is a reply to:
 Message 21 by Fosdick, posted 03-11-2007 8:09 PM Fosdick has not replied

Replies to this message:
 Message 35 by AZPaul3, posted 03-12-2007 11:49 PM Brad McFall has not replied

Brad McFall
Member (Idle past 5062 days)
Posts: 3428
From: Ithaca,NY, USA
Joined: 12-20-2001


Message 40 of 303 (389466)
03-13-2007 6:33 PM
Reply to: Message 39 by AZPaul3
03-13-2007 5:29 PM


Re: The Suite Smell of Success
You wrote,
quote:
and in effect, operates at the level of the gene.
but HM copied into the OP
quote:
Looking closer, as did G. C. Williams, Wm. Hamilton, R. Dawkins, et al., the actual site of natural selection can often be seen at the level of genes and their alleles (i.e., genetic evidence of strategic altruism for kin survival).
HM doesnt think
quote:
So to sum up, the mechanism of Natural Selection, in detail, operates at the level of the individual, and in effect, operates at the level of the gene.
He is looking from the wrong the place to start from but he thinks he can use Williams, Hamilton and Dawkins et. al.in support of from whence it has been ever since Darwin...
I disagree. (By the way, I was not expecting you to respond to me as I was kinda agreeing with what you wrote earlier, HM did not fully seperate the hierarchies and thus he got away with his assertion (but look at what others said in this thread, including you. HM will have to give up on a long tradition that attempts to discuss the multiple interrelations of genes with soma. I find biology much less interesting in that context.)
Would you like me to discuss Gould's ideas that Dawkins' and Williams' approaches can be seperated? and thus try to relate that back to the thread from there, which is clearly "evolutionary".
Edited by Brad McFall, : he-HM

This message is a reply to:
 Message 39 by AZPaul3, posted 03-13-2007 5:29 PM AZPaul3 has replied

Replies to this message:
 Message 41 by AZPaul3, posted 03-13-2007 7:10 PM Brad McFall has not replied

Brad McFall
Member (Idle past 5062 days)
Posts: 3428
From: Ithaca,NY, USA
Joined: 12-20-2001


Message 81 of 303 (389654)
03-14-2007 6:48 PM
Reply to: Message 44 by Fosdick
03-13-2007 9:04 PM


Re:give a HOOT don't pollute my genes!!
(better structure will occurr in response to AZPaul as I will be following Gould not myself thereat)
If that
quote:
Hamilton, Dawkins, et al. have argued that genes can be quite strategic in their adaptations for survival, even to the extent of demonstrating altruistic determinsim. So, individual survival may NOT be the real focus of natural selection;
is the case then YOUR MODEL possess tons of teleology that needs to be explained away where there adaptive fit is no longer tolerated. If “the genes” (“their adaptations”) have the property of ”being adapted’ in the design of any determinism you claim to name then what is the specific biophysics (chemical bond forces etc and where to directed . ) within the ”copy’ and that without it. As soon as there is an external/outside space/place of the adaptation, certainly some entities are more fit and have less tolerance than others . there is an aspect/property of said gene that no matter the strategy or altruism projected within (like in geometry where one determines an angle and triangle etc) by NOT within and THIS is teleological and goal directed if the selection is made artifical with respect to the individual no matter the actual copy number, as would occur in the small, nanotechnically in the future etc, should such be.
This view is myopic.
If it is not a shortcut then show me some diagram/design which displays in all the Dawkins’ engineering rigor what forces create what GENEadaptation and to what geometrical space is the dimension of this??
I do not come from the perspective that alternatives to Dawkins’ view needs to be explained but that Dawkins’ view IS THE atlternative, that is how it read simply and completely to me the very first time I read his work etc. and RD thus needs to carry the burden of proof not the passed on and taught thought of evolution itself. That is why I made a short cut through international takes on the topic.
In Post 55 you had
quote:
Since no individual survives long enough to actually experience NS, then the operational site of NS must be somewhere or something else.
but this statement or sentence shows less filiation to the heritage of statistics in biology (large or small population) then it does to value in the place of a world of facts. There is *some* number of events actually but one can know what 2/3 or something is before one has a reliable estimate of actual quantity.
This kind or reasoning may have effected me in the early days of posting on EvC but as nanotechnology developed an emboldened confidence in the past few years it became clear to me that given something like Wolfram’s ideas applied it would, on those ideas, be possible to alter the praxis that NS traditionally denotes. Dawkins can only tilt this windmill to the future. I need simple sit back on my haunch and hunches/lunch.
I have NO interest in evolution if it is not about individuals. The world would sooner die of religious warfare than that reality exist, it seems to me. The problem is my horizon already formed, functionalism can not alter it.
Sayins such as Moduluous’(post 63)
quote:
No individual will survive. The only thing that survives are the genes (until universal extinction of course).
overdetermines THE FORM.
It is precisely with issues of form that creationism can be put to bed so IF it is evc then evos should not try to have their cake so that they can eat something else instead.
What is going on here is that one goes beyond the notion of science to one of operationalism or practicalism but this is really an aspect of technology not biology say sensu stricto. It occurs from a particular philosophy about probabilisms but assumes rather than historicizes the contingency between environment and organism. There IS ALWAYS an external to this view.
So now all we can have is the “math” of the ”unit’ , let it come forth.
The problem reared it’s sleepy head when Mod wrote
quote:
Yes - but not all phenotypical characteristics are hereditry.
in post 71. As long a this can be formally imagined there is some position beyond the genes involved but from a nexus of form this only need be conceptualized rather than algorithmized as would be incumbent on those doing the book keeping.
It can never be said that a biologist can not use non-adaptive charcters to become adaptive in AN EVOLUTIONARY THEORY of tommarrow, but because there is not as intricate a community of pure and pratical biologists as there are physicists biology lacks the momentum in this regard that physics HAS, so, the debate force of Mod position is weakened and ineffectual for debate even though it may not alter one side or the other’s privately.
Again if the gene eyepoint of view is true, then what are the biophysics of genes’ adaptations for programmed cell death for instance? Functional notions of copy number, “cooperation” and assorted functionalism need to be explained not sequentially but form by form. Who can do this? Did Hamilton??

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 Message 44 by Fosdick, posted 03-13-2007 9:04 PM Fosdick has not replied

Brad McFall
Member (Idle past 5062 days)
Posts: 3428
From: Ithaca,NY, USA
Joined: 12-20-2001


Message 109 of 303 (389839)
03-15-2007 6:42 PM
Reply to: Message 106 by Fosdick
03-15-2007 1:59 PM


Re: The Suite Smell of Success
What is the problem with this quote then?
quote:
[PDF] Stephen Jay Gould, The Structure of Evolutionary Theory , The ... File Format: PDF/Adobe Acrobat - View as HTML
“We define selection as occurring when plurifaction results from a causal. interaction between traits of an evolutionary individual (a unit of selection) ...
http://www.philipmcshane.ca/cantower15.pdf - Similar pages
Do you simply want more information on the 'definition' or are you disagreeing with the use of the word "we"?
We are not disagreeing here that natural selection occurrs as we may in another thread taking the lead from a creationist bias for instance.
You see if you are going to object towards the notion of THE 'causal' etc then it really does matter if one starts from form or function or has a particular philosophy or is a creationist etc.
Perhaps we need different threads for the possible or actual ontology of NS and one for the epistemology of artifical vs natural selection.
If you insist on the gene-view I simply would like to know the biophysics vectors BETWEEN traits. As is apparent from the view at the level of the small the forces and the function come to a foreground but from the organism the shape of the traits viewed out-in may still overdetermine the adumbration. The word "trait" carries way to much logos for me from a purely redutionist position. Biology is depauperate for me in that case. The diveristy of life can not be linguistically sedimented to me when this is the "largest" level of organization available to discuss form-making and translation in space.

This message is a reply to:
 Message 106 by Fosdick, posted 03-15-2007 1:59 PM Fosdick has not replied

Brad McFall
Member (Idle past 5062 days)
Posts: 3428
From: Ithaca,NY, USA
Joined: 12-20-2001


Message 173 of 303 (390745)
03-21-2007 7:00 PM
Reply to: Message 167 by Fosdick
03-21-2007 12:21 PM


Hoot Mon = Mod?
I am not so sure.
I do not see that Moduluous would be thinking against Gould's simple idea that the "skin" of vertebrates is something that "protects" (I can find the quote if you prefer) their evolutionary individuality.
You series of talking points would turn a nictating membrane into a whole body kinesis, not something impossible physiologically, across verts (when put into a rotating room of black and white bars painted on the wall some verts move eyes, some turn heads and some turn the whole body), but psychologically of a different order than Modulous' strident orbit.
If one refuses to grant the skin the interactors' organon of first defense it will be hard to realize the suffiency of superfludity that your position remains redactable for/to. I think only when polyploidy(vs haploid or diploid forms) and DNA copying are better remanded can we shake out the copyists from the replicators through interaction.
One way to get there is to clearly cognize the levels and then to discuss the relative frequency of them in nature. If biology really was at its analytic best I think thinking that replicators are WHAT is being selected may be the razor but because syntheses are proceeding with parsimony without being far enough analyzed this gulf exists where instead a "transition" was and that suits the creationist as it is opposite to ground truths to some extent.
Gould's anti-creationist rehtoric only holds so much logos. The disjunction may exist and not be digital. This is not where Modulous's phrases and phases go.
Edited by Brad McFall, : for/to

This message is a reply to:
 Message 167 by Fosdick, posted 03-21-2007 12:21 PM Fosdick has not replied

Brad McFall
Member (Idle past 5062 days)
Posts: 3428
From: Ithaca,NY, USA
Joined: 12-20-2001


Message 187 of 303 (390963)
03-22-2007 6:27 PM
Reply to: Message 182 by crashfrog
03-22-2007 3:26 PM


Re: clarification
Hoot gets to the difference of 4) AND 5) VIA the 2nd which provides an induction that may not exist. Panbiogeographers would add that purely spatial factors need to be considered.
Yeah, he went back. His reply in 184 did not "flow" for me.
If the list was made in terms of atoms rather than genes he might have something. I cant see it.
Edited by Brad McFall, : wrong negation

This message is a reply to:
 Message 182 by crashfrog, posted 03-22-2007 3:26 PM crashfrog has not replied

Brad McFall
Member (Idle past 5062 days)
Posts: 3428
From: Ithaca,NY, USA
Joined: 12-20-2001


Message 189 of 303 (390968)
03-22-2007 6:38 PM
Reply to: Message 186 by Modulous
03-22-2007 5:16 PM


Re: clarification
Can geneic selection act on putative non-adaptive traits such as minor scale variation in snake skins that do seem to be clined with evironmental temperature regimes in some cases?
Some research indicates that it is the lipids and not the keratin that provides the difference in lack of water loss for reptiles (compared to amphibians).
Could reptiles have evolved from amphibians by "bad luck" where lipids released on injury somehow metabolically affected the chiken and egg future reptile skin keratinization thus sealing the case and creature?
If reptiles DID so evolve would this not be natural selection in the wild as per:
If one can think of the phenotype linguistically as not otherwise configured than squash shapes fully it must be obeyed that as:
Wright completed his four volumes entitled:
1) Genetics and Biometric Foundations
2) Theory of Gene Frequencies
3) Experimental Results and Evolutionary Deductions
4) Variability Within And Among Natural Populations
In 1978
quote:
Page Not Found - University of Chicago Press
And by 1986
John Endler
People | Ecology, Evolution and Marine Biology | UC Santa Barbara
wrote:Natural Selection in the Wild
But today Will Provine and others are downplaying “Wright’s causation” BUT THEY THINK THIS WITHOUT WORKING OUT A DIFFERENT ”deduction’ for natural and artifical selections. I know Will does not use the deductive mathematical process and thus there is little work being done which uses the ENTIRE THOUGHT PROCESS of the four volumes.
The confusion in this thread seems to be due to attempts by the elite to elide Wright’s “deduction” among “natural populations” but keep a selection with Endler artifically. This is the kind of move that creationists rightly gasp at. It is like what happened when creationists were told that paleontologists were no longer arguing for transitions anagenically but were predicting gaps.
Wright had done a lot of work on domestic breeding programs and the rearing of lab animals but his work was to show how the extension to selection in nature occurs.
Unless this work is attended to, in, its purely mathematical, as well a physiological genetics aspects, artificial and natural selection will become MORE fused than unconfused as they were originally for Darwin.
To do otherwise attempts to possibly put genes in two places at the same time.
“Pick a card” any card only becomes an inaccessible cardinal of thought if the deduction is obviated. The move to have this be the default background is groundless. Thus the scenario of the creeping things above.
Edited by Brad McFall, : BB
Edited by Brad McFall, : repeated text removed

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