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Author Topic:   Instinctual Behavior Vs Intelligent Decisions
Wounded King
Member
Posts: 4149
From: Cincinnati, Ohio, USA
Joined: 04-09-2003


Message 55 of 83 (644852)
12-21-2011 8:03 AM
Reply to: Message 54 by zi ko
12-21-2011 6:49 AM


Re: the environment
What you have described is by no means 'forbidden' by Darwinism, it is essentially an example of what Waddington called canalisation, the repeated behaviour forms the suitable environment to select for variations which promote that behaviour. Waddington further called the situation where an organism chooses its own environment to a degree or modifies that environment to its own ends 'The Exploitive System'.
Waddington identified 4 systems involved in evolution, the exploitive system, the epigenetic system, the natural selective system and the genetic system.
Of course whether such a thing would occur would be highly dependent on what the specific behaviour was and how it would become selectively advantageous. Mere repetition would not be sufficient
TTFN,
WK

This message is a reply to:
 Message 54 by zi ko, posted 12-21-2011 6:49 AM zi ko has replied

Replies to this message:
 Message 59 by zi ko, posted 12-22-2011 10:48 AM Wounded King has replied

  
Wounded King
Member
Posts: 4149
From: Cincinnati, Ohio, USA
Joined: 04-09-2003


Message 62 of 83 (645026)
12-22-2011 12:41 PM
Reply to: Message 59 by zi ko
12-22-2011 10:48 AM


Re: Neural system and evolution.
The gee dance in order to inform other gees does not have any impact on environment.
Really? So it doesn't lead to changes in the behaviour of other bees or to changes in the availability of pollen depending on its accuracy?
In any case Environment change is trivial to instinct formation
Care to provide any coherent and substantive support for this claim? The idea that the environment is trivial to any aspect of adaptive evolution is pretty much unsupportable, I'm interested to see how you go about it.
Before the time learnt behavior could affect environment, many generations must have past.
An erroneous assumption when you realise that other members of a population constitute part of the environment, and even without that consideration the calim that it would take many generations to change the environment seems tenuous, do Beaver dams not affect the environment? Do they take generations to build?
But in this case how the behaviour could be transferred to next generatios?
By learning, hence it originally being a learned behaviour. Organisms in a population can sometimes learn by observing other organisms in the population and this can occur transgenerationally when the generations coexist.
I'll see if I can find any sort of example.
TTFN,
WK

This message is a reply to:
 Message 59 by zi ko, posted 12-22-2011 10:48 AM zi ko has replied

Replies to this message:
 Message 63 by zi ko, posted 12-23-2011 1:08 AM Wounded King has replied

  
Wounded King
Member
Posts: 4149
From: Cincinnati, Ohio, USA
Joined: 04-09-2003


Message 64 of 83 (645090)
12-23-2011 5:15 AM
Reply to: Message 63 by zi ko
12-23-2011 1:08 AM


Re: Neural system and evolution.
Why not accept the simple and obviouw fact that learnt behaviour CAN be inherited.
Sure it can, by social transmission and potentially in the longer term by the sort of canalisation/genetic assimilation I described.
What is the evidence against it? We have only a dogmatic deny by Darwinists, which day by loses its impetus (see epigenetics studies)
Wow, whenever a creationist/IDist brings up epigentics nowadays it is like a homeopathy proponent bringing up quantum mechanics, its just a word they use, they clearly have no idea what it means and they assume no one else does either but feel it adds a lovely patina of sciencyness to their nonsense.
Please provide a link to some research showing epigenetics mediating the inheritance of learned behaviour. If you can't then please stop pretending it exists.
After all Darwin himself did not reject in some cases Lamarck's ideas.
But then Darwin was wrong about a whole lot of stuff because for all his experiments in breeding he didn't really know anything about genetics.
TTFN,
WK

This message is a reply to:
 Message 63 by zi ko, posted 12-23-2011 1:08 AM zi ko has replied

Replies to this message:
 Message 66 by zi ko, posted 12-23-2011 1:37 PM Wounded King has replied

  
Wounded King
Member
Posts: 4149
From: Cincinnati, Ohio, USA
Joined: 04-09-2003


Message 65 of 83 (645096)
12-23-2011 6:49 AM


Genetic assimilation of behaviour?
OK, so I told Zi Ko I would look for some examples of the sort of learned behaviour becoming instinctual that we discussed. What follows is a brief description of the first experimental example I have found (Moray and Connolly, 1963), sadly I believe the full text is behind a paywall.
In this experiment flies were artificially selected over several rounds for and against an aversion to food flavoured with peppermint oil. The selected, and unselected, flies were then use to produce populations which were continued for multiple generations with selection applied at each generation. The populations were raised in 6 different conditions, flies averse to peppermint raised on normal food, flies non-averse to peppermint raised on normal food, unselected flies raise on normal food, flies averse to peppermint raised on peppermint food, flies non-averse to peppermint raised on peppermint food and unselected flies raise on peppermint food. Each generation the flies were tested for their aversion to peppermint.
For those populations raised on normal food the levels of aversion stayed relatively consistent for over 10 generations. In the populations raised on peppermint however the averse population rapidly loses its aversion, reaching levels comparable with the non averse after only 3 generations. If the averse population is returned to normal food after only 3 generations then it will regain its aversion however if it is returned after 7 generations it will not and the no-averse behaviour persists.
The authors explain this as a results of canalisation interacting with the strong selection for aversion applied to the population. This is perhaps a necessary conclusion since in the case of the unselected lines being raised on the peppermint food there seems to be no effect on their aversion!
Whether this should really be considered a case of a learned behaviour, non-averse behaviour in the averse population, becoming an instictual one is debatable since there was clearly already some non-averse behaviour present in the variability of the original wild-type population.
TTFN,
WK

Replies to this message:
 Message 68 by zi ko, posted 12-24-2011 11:18 AM Wounded King has seen this message but not replied
 Message 75 by zi ko, posted 01-14-2012 11:40 PM Wounded King has seen this message but not replied

  
Wounded King
Member
Posts: 4149
From: Cincinnati, Ohio, USA
Joined: 04-09-2003


Message 67 of 83 (645131)
12-23-2011 2:42 PM
Reply to: Message 66 by zi ko
12-23-2011 1:37 PM


Re: Neural system and evolution.
What is the evidence against it?
Well there is nothing suggesting it has never been observed to happen over many multi generational studies involving behaviour. What is the evidence for it? Oh no wait, there isn't any, you are still waiting for the scientific world to catch up with your vague musings. Still, at least you have Wikipedia to keep you up to date with cutting edge research.
I present you a way learned behaviour can become genetically represented and you choose to ignore it in favour of your pipe dreams.
TTFN,
WK

This message is a reply to:
 Message 66 by zi ko, posted 12-23-2011 1:37 PM zi ko has not replied

  
Wounded King
Member
Posts: 4149
From: Cincinnati, Ohio, USA
Joined: 04-09-2003


Message 79 of 83 (648655)
01-17-2012 11:53 AM
Reply to: Message 77 by zi ko
01-16-2012 11:18 PM


Could you be more ... specific?
Unfortunately this is once again getting into definitional issues. There is a paper "Are Complex Behaviors Specified by Dedicated Regulatory Genes? Reasoning from Drosophila" (Baker et al., 2001). from the title one might think this will clear the matter up, and this is the case if one is prepared to accept their definition of what constitutes a gene 'specifying' a behaviour.
Baker et al, 2001 writes:
we will say that a gene specifies a behavior if, in an otherwise wild-type organism, the functioning of that gene is necessary and sufficient to establish the potential for a particular behavior. Note that this definition does not require there be only one regulatory gene specifying a behavior. Indeed, we expect that if there are regulatory genes specifying individual behaviors, they likely function in regulatory hierarchies to build the potential for a specific behavior into the nervous system.
Note also that this definition of specify does not say that it is the gene specifying a behavior that is solely responsible for that behavior. Elementary a priori considerations suggest that the appropriate functioning of many genes is essential for all behaviors. Any behavior requires the functioning of a multicellular circuit beginning with input to the nervous system, propagation and interpretation of that input in the CNS, and output via neurons that directs a response via neuromuscular, or neuroendocrine systems, or both. Impairment of any part of such a circuit is likely to cause decrements in the behavior it subserves.
[...]
Thus, many genes must function to set up the nervous system's structure, and subsequently to elicit and manifest neuromuscular/endocrine functions. We take the preceding statement as an obvious, and not a particularly interesting, truth; and it is not germane to the issue we are addressing.
You should like the paper, it uses the word neural a lot, though sadly not the word empathy.
If you find their definition acceptable I could provide some examples, I'm not sure what the actual access status of that paper is.
TTFN,
WK

This message is a reply to:
 Message 77 by zi ko, posted 01-16-2012 11:18 PM zi ko has replied

Replies to this message:
 Message 80 by zi ko, posted 01-18-2012 12:00 PM Wounded King has replied

  
Wounded King
Member
Posts: 4149
From: Cincinnati, Ohio, USA
Joined: 04-09-2003


Message 81 of 83 (648777)
01-18-2012 12:15 PM
Reply to: Message 80 by zi ko
01-18-2012 12:00 PM


Re: Could you be more ... specific?
I see no similarity between what you say and what Baker wrote, except that some of the same words are used.
I'll try and post later with some of the examples from the paper.
TTFN,
WK

This message is a reply to:
 Message 80 by zi ko, posted 01-18-2012 12:00 PM zi ko has not replied

  
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