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Author Topic:   About New Lamarckian Synthesis Theory
zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 40 of 264 (674989)
10-04-2012 7:20 PM
Reply to: Message 39 by Larni
10-04-2012 4:12 PM


No. You started the thread, you pony up the evidence.
So can we agree that none of us can bring the needed evidence? It would be a very good start. Of course it pains,especially for you anderstandably, as after 250 years of intense research, the results are so meagre for the randomness of mutations. After all a theory or a hypothesis does not always need to bring the needed evidence.
Do you think it is realistic or even normal to expect a non specific scientist or even a specific one to provide all you want to be persuated, which i don't intent to. On the OP I related some work done in the field. Can you comment on them?


This message is a reply to:
 Message 39 by Larni, posted 10-04-2012 4:12 PM Larni has replied

Replies to this message:
 Message 41 by Admin, posted 10-04-2012 9:28 PM zi ko has not replied
 Message 42 by herebedragons, posted 10-04-2012 9:51 PM zi ko has replied
 Message 43 by Larni, posted 10-05-2012 3:02 PM zi ko has not replied

  
zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 44 of 264 (675127)
10-06-2012 12:05 PM
Reply to: Message 31 by nwr
10-02-2012 12:07 PM


natural selection is given as the means by which the environment affects the genome.
No, I mean direct environmental effect on deep DNA. I quote from TIME MAGAZINE, "WHY YOUR DNA ISN'T YOUR DESTINY by JOHN CLOUD:
"The stress of fear, lack of food, lack of mating opportunities etc., are the main causes of soft or deep changes. As these stresses are empathetically transmitted not only to life peers, but to extant population in wild areas, and to proximal generations , the resultant beneficial mutations are fairly quickly established, reducing the time needed by natural selection to do its work. This long time effect is the main cause of speciation as it expresses deep survival needs."


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 Message 31 by nwr, posted 10-02-2012 12:07 PM nwr has replied

Replies to this message:
 Message 47 by Percy, posted 10-06-2012 12:40 PM zi ko has replied
 Message 48 by nwr, posted 10-06-2012 2:15 PM zi ko has replied
 Message 51 by Taq, posted 10-09-2012 12:44 PM zi ko has replied

  
zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 46 of 264 (675129)
10-06-2012 12:33 PM
Reply to: Message 42 by herebedragons
10-04-2012 9:51 PM


But the evidence that there is for random mutations is rather compelling. The evidence for guided mutations is virtually non-existent.
Is it so difficult that compelling evidence to presented for? I can't prove the non-existance of something that it does not exist.
Epigenetics is not the same thing as guided mutations. Period.
As far as we know up to now. But guided mutations are at least having equal chances to exist as random mutations do, regarding the realy slim amounts of evidence for each of them. From JOHN CLOUD's "your DNA ISN'T YOUR DESTINY" I quote:
"For deep evolutional changes in multi-cellular organisms, mutations on DNA to be beneficial, need to be prepared by epigenetic phenotype changes, which facilitate these types of mutation. In one cell and other of low organization evolution is endogenously forced by life momentum."
Edited by Admin, : Fix quotes, improve formatting.


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zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 49 of 264 (675158)
10-07-2012 5:02 AM


Statement of mistake
I have to state and apologise for it, a mistake made unintentionally by me. The quotes mentioned in messages 44 and 46 in replies to nwr and HBD are not from WHY DNA ISN'T A DESTSTINY FOR YOU by JOHN CLOUDS. The mistake had been caused from a mixing up of my notes
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Replies to this message:
 Message 50 by Percy, posted 10-07-2012 8:39 AM zi ko has replied

  
zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 52 of 264 (675316)
10-10-2012 11:08 AM
Reply to: Message 50 by Percy
10-07-2012 8:39 AM


My intention is to discuss the matter, not to convince anybody.
The article i brought here it is enough for the beginning of the discussion. I think there isn't any need to fo relate passages of it. The important question that arises from it is: Is it correct to stick on the up to now knowledge that epigenetic changes are always remaining epigenetic and don't pave the way, in the long run, to deep DNA changes?


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zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 53 of 264 (675317)
10-10-2012 11:19 AM
Reply to: Message 47 by Percy
10-06-2012 12:40 PM


...apparently less overt acquired characteristics *can* be inherited, though they are thought to be impermanent and in the absence of the original environmental factor will fade away and be lost.
Yes I agree.But what if theoriginal factor will not fade away? Has science any answer on this?
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 Message 47 by Percy, posted 10-06-2012 12:40 PM Percy has replied

Replies to this message:
 Message 54 by Panda, posted 10-10-2012 11:35 AM zi ko has replied
 Message 64 by Percy, posted 10-11-2012 9:15 AM zi ko has replied

  
zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 55 of 264 (675322)
10-10-2012 11:35 AM
Reply to: Message 51 by Taq
10-09-2012 12:44 PM


Re DOUPTING IS THE BEAUTY OF SCIENCE
Epigenetics is completely off topic unless you can show how it influences sequence changes over time.
This does not preclude that it could happen. I can not prove how does it happen (becouse of the time limit, or limited knowledge) neither you manage after so intence research to prove it couldn't happen.
Edited by zi ko, : No reason given.


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 Message 51 by Taq, posted 10-09-2012 12:44 PM Taq has replied

Replies to this message:
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 Message 59 by Taq, posted 10-10-2012 12:19 PM zi ko has replied

  
zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 56 of 264 (675323)
10-10-2012 11:47 AM
Reply to: Message 48 by nwr
10-06-2012 2:15 PM


Re DOUPTING IS THE BEAUTY OF SCIENCE
However, to make a case of Lamarckian inheritance, you would really need to see these effects transmitted to many generations, not only to the immediate next generation.
in fact the effects were lasting in many generations.
There's another effect that I didn't see in that Time report (or perhaps I missed it). Namely that some of these stress conditions are known to increase mutation rates, which can affect the rapidity of evolution.
You can't see mutations in metazoans and so in man.


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 Message 48 by nwr, posted 10-06-2012 2:15 PM nwr has seen this message but not replied

  
zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 57 of 264 (675324)
10-10-2012 11:52 AM
Reply to: Message 54 by Panda
10-10-2012 11:35 AM


Re DOUPTING IS THE BEAUTY OF SCIENCE
If all environmental factors are subject to change, then science's answer is: "Those types of environmental factors do not exist."
I don't follow you.


This message is a reply to:
 Message 54 by Panda, posted 10-10-2012 11:35 AM Panda has replied

Replies to this message:
 Message 63 by Panda, posted 10-11-2012 5:43 AM zi ko has replied

  
zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 65 of 264 (675478)
10-11-2012 3:00 PM
Reply to: Message 64 by Percy
10-11-2012 9:15 AM


You're not asking anything complicated.
It doesn't seem to me so simple. We are talking about thousands or more of years. Is it sensible to equate one four generations and so long spans, at their affects on genome? Any way we just don't know.


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zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 66 of 264 (675479)
10-11-2012 3:07 PM
Reply to: Message 63 by Panda
10-11-2012 5:43 AM


You are asking about environment factors that do not fade away, but can you name one that doesn't fade away?
Lack of food for maybe a thousand or more of years.Or lower environmet temperature for amillion of years.


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zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 67 of 264 (675484)
10-11-2012 3:25 PM
Reply to: Message 59 by Taq
10-10-2012 12:19 PM


Re: Re DOUPTING IS THE BEAUTY OF SCIENCE
It is your theory. You need to present the evidence that it does happen as you claim it does. How does epigenetics guide mutations so that they are not random with respect to fitness?
You are right. But surely you and science in general on lack of evidence against a theory should keep an open mind of its possibility to happen.


This message is a reply to:
 Message 59 by Taq, posted 10-10-2012 12:19 PM Taq has replied

Replies to this message:
 Message 69 by Taq, posted 10-12-2012 1:10 PM zi ko has replied

  
zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 68 of 264 (675487)
10-11-2012 3:38 PM
Reply to: Message 61 by herebedragons
10-10-2012 2:02 PM


But we all know zi ko doesn't want to discuss epigenetics ...
Why not?
he wants to discuss directed mutations
And again why not? What makes you to believe otherwise? Or it is an avasion?


This message is a reply to:
 Message 61 by herebedragons, posted 10-10-2012 2:02 PM herebedragons has replied

Replies to this message:
 Message 74 by herebedragons, posted 10-13-2012 1:24 PM zi ko has replied

  
zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 70 of 264 (675603)
10-12-2012 11:37 PM
Reply to: Message 69 by Taq
10-12-2012 1:10 PM


Re: Re DOUPTING IS THE BEAUTY OF SCIENCE
Science is always open to new evidence.
I agree. . Ufortunaly in science there are theories,not proved, but just accepted by its followers as true, for not exactly scientific reasons, as f.e randomness in mutations, which they act against probing new or old ideas , as it did happened with Lamarckism. I know your arguments. They are so few. I understand the difficulties (long time scale, focusing in mutations on metazoa etc). The same it applies to environmentally guided mutations. I just hope you aknowledge this.


This message is a reply to:
 Message 69 by Taq, posted 10-12-2012 1:10 PM Taq has replied

Replies to this message:
 Message 71 by Coyote, posted 10-12-2012 11:56 PM zi ko has replied
 Message 72 by Theodoric, posted 10-13-2012 12:03 AM zi ko has replied
 Message 83 by Taq, posted 10-16-2012 5:02 PM zi ko has replied

  
zi ko
Member (Idle past 3641 days)
Posts: 578
Joined: 01-18-2011


Message 75 of 264 (675650)
10-14-2012 5:56 AM
Reply to: Message 74 by herebedragons
10-13-2012 1:24 PM


environment --> epigenetics --> mutation --> evolution --> preservation of life
You are right. But in my opening pos i did put some thoughts and data i wanted and insit to discus.Not to present a new theory.Thiw was not my purpose.


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