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Author Topic:   Potential falsifications of the theory of evolution
shadow71
Member (Idle past 2963 days)
Posts: 706
From: Joliet, il, USA
Joined: 08-31-2010


Message 811 of 968 (603996)
02-09-2011 2:11 PM
Reply to: Message 805 by Taq
02-08-2011 3:56 PM


Re: In a sense deterministic?
taq writes;
They could, but they aren't. During stress the E. coli upregulate the expression of DinB which codes for an error prone polymerase that fixes gaps in the DNA (also called translesion repair).
I am not trying to be cute here, but what causes the E. coli to upregulate the expressin of DinB?
Is this in some way a sentient process?
Edited by shadow71, : No reason given.

This message is a reply to:
 Message 805 by Taq, posted 02-08-2011 3:56 PM Taq has replied

Replies to this message:
 Message 816 by Taq, posted 02-09-2011 3:22 PM shadow71 has replied

shadow71
Member (Idle past 2963 days)
Posts: 706
From: Joliet, il, USA
Joined: 08-31-2010


Message 812 of 968 (603997)
02-09-2011 2:15 PM
Reply to: Message 806 by Taq
02-08-2011 3:59 PM


taq writes;
In the case of the SOS response in E. coli, the guidance is towards DNA gap repair by an error prone polymerase that incorporates de novo mutations.
.
How do you interpret this guidance? Is it in some way directed or is it random?

This message is a reply to:
 Message 806 by Taq, posted 02-08-2011 3:59 PM Taq has replied

Replies to this message:
 Message 815 by Taq, posted 02-09-2011 3:14 PM shadow71 has replied

shadow71
Member (Idle past 2963 days)
Posts: 706
From: Joliet, il, USA
Joined: 08-31-2010


Message 813 of 968 (604001)
02-09-2011 2:42 PM
Reply to: Message 807 by molbiogirl
02-08-2011 5:13 PM


Re: Shapiro's reply
molbiogirl posts;
Looks like Shapiro just re-iterated what I said. This, I think, is a working definition of "sentient" as used by Shapiro.
I'm going to ask him something else.
Molbiogirl, I think you are doing what you accused me of doing. Interpreting his words as per your thinking.
He says;
What we know is that cells have sensory systems and that cells can transmit and process information that these systems generate.
I don't interpret that as being "learn by trial and error." He is stating that they do this but does not say by trial and error, but by these sensory systems..
The deeper we look into cell sensory and memory systems, such as piRNA loci in animals and CRISPRs in prokaryotes, the more difficult it is to say that any of them are simple. I personally do not know how cell computation works,... We have
a great deal to learn about how cell information-processing operates and influences natural genetic engineering. That, it seems to me, is where our experimental focus should be in evolution science.
He is not saying that NGE mechanisms simply respond he is saying as of now he does not know how cell computation works, and we should devote expermential trials in this area.
So he is saying cell processing works, but as of yet we do not know how it works.
the answer is what I am looking for.

This message is a reply to:
 Message 807 by molbiogirl, posted 02-08-2011 5:13 PM molbiogirl has replied

Replies to this message:
 Message 814 by molbiogirl, posted 02-09-2011 2:56 PM shadow71 has replied

molbiogirl
Member (Idle past 2671 days)
Posts: 1909
From: MO
Joined: 06-06-2007


Message 814 of 968 (604004)
02-09-2011 2:56 PM
Reply to: Message 813 by shadow71
02-09-2011 2:42 PM


Re: Shapiro's reply
He is stating that they do this but does not say by trial and error, but by these sensory systems.
Sensory systems can be as simple as a molecule docking in a sensor.
Sensory transduction in Escherichia coli: two complementary pathways of information processing that involve methylated proteins, PNAS August 1, 1977 vol. 74 no. 8 3312-3316
The function of a sensory receptor cell is to detect external stimuli and transduce this information into a signal that elicits the appropriate behavioral response. In bacterial chemotaxis stimuli are detected by approximately 20 different types of chemoreceptors which transmit information along a network of converging pathways.
That's hardly guidance, shadow.
I don't interpret that as being "learn by trial and error."
I was quoting you to Shapiro, shadow. You said cells "learn by trial and error".

This message is a reply to:
 Message 813 by shadow71, posted 02-09-2011 2:42 PM shadow71 has replied

Replies to this message:
 Message 818 by shadow71, posted 02-09-2011 7:42 PM molbiogirl has replied

Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.1


Message 815 of 968 (604008)
02-09-2011 3:14 PM
Reply to: Message 812 by shadow71
02-09-2011 2:15 PM


How do you interpret this guidance? Is it in some way directed or is it random?
It is directed to breaks in DNA and it is non-random with respect to DNA damage. However, it is not directed to create specific mutations in response to specific stimuli and it is random with respect to fitness.

This message is a reply to:
 Message 812 by shadow71, posted 02-09-2011 2:15 PM shadow71 has replied

Replies to this message:
 Message 827 by shadow71, posted 02-10-2011 2:40 PM Taq has not replied

Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.1


Message 816 of 968 (604010)
02-09-2011 3:22 PM
Reply to: Message 811 by shadow71
02-09-2011 2:11 PM


Re: In a sense deterministic?
I am not trying to be cute here, but what causes the E. coli to upregulate the expressin of DinB?
Is this in some way a sentient process?
Wiki has a nice description here:
SOS response - Wikipedia
The skinny is that single stranded DNA activates RecA which then interacts with the gene repressor LexA. The interaction of activated RecA with LexA removes the LexA from the DNA it is bound to. Once LexA is gone from the promoter regions of the SOS genes they are expressed at higher levels.
I would call it an automated response in the same way that pushing the handle on the toilet causes the toilet to flush. If you think the SOS response is a sentient process then your toilet is likewise sentient for deciding to empty the bowl when the handle is pushed.

This message is a reply to:
 Message 811 by shadow71, posted 02-09-2011 2:11 PM shadow71 has replied

Replies to this message:
 Message 828 by shadow71, posted 02-10-2011 2:53 PM Taq has not replied

Percy
Member
Posts: 22504
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.9


Message 817 of 968 (604021)
02-09-2011 4:21 PM
Reply to: Message 810 by molbiogirl
02-09-2011 1:47 PM


Re: Shapiro's reply
Since Shadow seems so enamored of Shapiro, maybe we should just accommodate ourselves to Shapiro's terminology for this thread. We could say, "Okay, fine, mutations are non-random, but their effect on fitness is highly non-deterministic."
--Percy

This message is a reply to:
 Message 810 by molbiogirl, posted 02-09-2011 1:47 PM molbiogirl has not replied

Replies to this message:
 Message 819 by shadow71, posted 02-09-2011 7:49 PM Percy has replied

shadow71
Member (Idle past 2963 days)
Posts: 706
From: Joliet, il, USA
Joined: 08-31-2010


Message 818 of 968 (604041)
02-09-2011 7:42 PM
Reply to: Message 814 by molbiogirl
02-09-2011 2:56 PM


Re: Shapiro's reply
molbiogirl writes;
Sensory systems can be as simple as a molecule docking in a sensor.
Or as complicated as this.
Bacterial linguistic communication and social intelligence
References and further reading may be available for this article. To view references and further reading you must purchase this article
Eshel Ben Jacob1, , Israela Becker1, 2, Yoash Shapira1 and Herbert Levine3
1School of Physics and Astronomy, The Raymond and Beverly Sackler Faculty of Exact Sciences, Tel-Aviv University, Tel-Aviv 69978, Israel
2Tel-Aviv Academic College of Engineering, 218 Bney Efraim Rd., Tel-Aviv 69107, Israel
3Center for Theoretical Biological Physics, University of California at San Diego, La Jolla, CA 92093-0319, USA
Available online 1 July 2004.
Abstract
Bacteria have developed intricate communication capabilities (e.g. quorum-sensing, chemotactic signaling and plasmid exchange) to cooperatively self-organize into highly structured colonies with elevated environmental adaptability. We propose that bacteria use their intracellular flexibility, involving signal transduction networks and genomic plasticity, to collectively maintain linguistic communication: self and shared interpretations of chemical cues, exchange of chemical messages (semantic) and dialogues (pragmatic). Meaning-based communication permits colonial identity, intentional behavior (e.g. pheromone-based courtship for mating), purposeful alteration of colony structure (e.g. formation of fruiting bodies), decision-making (e.g. to sporulate) and the recognition and identification of other colonies — features we might begin to associate with a bacterial social intelligence. Such a social intelligence, should it exist, would require going beyond communication to encompass unknown additional intracellular processes to generate inheritable colonial memory and commonly shared genomic context.
This could be guidance Molbiogirl.
Shapiro had a quote in his video cited in my reply something to the effect that in my obtaining a B.S. in English, no one told me what NOT TO THINK.
I find on this board a very determinative oppostion to anything that may go against the Darwinain theory.
Thats not the way science should work. Be open to new idea's, don't ridicule, investigate.
Found this in Ernst Mayr's book "What Evolution is", p. 87.
"This makes it quite clear why Darwinian evolution, being a population phenomenon, must always be gradual(see Chapter 4"
Do you agree this is true today?.
You have to know when to holdem and when to foldem. Be objective and agreeable to change if it is proven.
More to come on Natual Genetic Engineering.

This message is a reply to:
 Message 814 by molbiogirl, posted 02-09-2011 2:56 PM molbiogirl has replied

Replies to this message:
 Message 821 by Dr Adequate, posted 02-09-2011 8:17 PM shadow71 has seen this message but not replied
 Message 823 by Taq, posted 02-10-2011 1:36 AM shadow71 has replied
 Message 824 by molbiogirl, posted 02-10-2011 10:52 AM shadow71 has seen this message but not replied
 Message 825 by Bolder-dash, posted 02-10-2011 10:58 AM shadow71 has replied

shadow71
Member (Idle past 2963 days)
Posts: 706
From: Joliet, il, USA
Joined: 08-31-2010


Message 819 of 968 (604042)
02-09-2011 7:49 PM
Reply to: Message 817 by Percy
02-09-2011 4:21 PM


Re: Shapiro's reply
Percy wrote;
Since Shadow seems so enamored of Shapiro, maybe we should just accommodate ourselves to Shapiro's terminology for this thread. We could say, "Okay, fine, mutations are non-random, but their effect on fitness is highly non-deterministic."
Maybe you should say "mutations are non-random, but their effect on fitness are not yet known and may well be deterministic.

This message is a reply to:
 Message 817 by Percy, posted 02-09-2011 4:21 PM Percy has replied

Replies to this message:
 Message 820 by Percy, posted 02-09-2011 8:07 PM shadow71 has replied
 Message 822 by Taq, posted 02-10-2011 1:29 AM shadow71 has seen this message but not replied

Percy
Member
Posts: 22504
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.9


Message 820 of 968 (604044)
02-09-2011 8:07 PM
Reply to: Message 819 by shadow71
02-09-2011 7:49 PM


Re: Shapiro's reply
shadow71 writes:
Maybe you should say "mutations are non-random, but their effect on fitness are not yet known and may well be deterministic."
I'm not sure where this is coming from. Is this what you think Shapiro is saying?
We're all in favor of keeping an open mind and following the evidence where it leads, but the available evidence (and there's a lot of it) says that mutations are random with regard to fitness. Shapiro prefers the term non-random for mutations resulting from cellular machinery as opposed to random accident, but he still calls their effect on fitness highly non-deterministic.
If someone is doing science if they avoid drawing conclusions until they have evidence, what do you call what they are doing when they still avoid drawing conclusions after they have evidence, or even worse, draw conclusions that ignore the evidence.
--Percy

This message is a reply to:
 Message 819 by shadow71, posted 02-09-2011 7:49 PM shadow71 has replied

Replies to this message:
 Message 829 by shadow71, posted 02-10-2011 2:59 PM Percy has replied

Dr Adequate
Member (Idle past 314 days)
Posts: 16113
Joined: 07-20-2006


Message 821 of 968 (604045)
02-09-2011 8:17 PM
Reply to: Message 818 by shadow71
02-09-2011 7:42 PM


Re: Shapiro's reply
I find on this board a very determinative oppostion to anything that may go against the Darwinain theory.
Thats not the way science should work. Be open to new idea's, don't ridicule, investigate.
I find on this board a very determinative oppostion to anything that may go against the theory that pigs don't have wings.
Thats not the way science should work. Be open to new idea's, don't ridicule, investigate.
We have, so far, seen little evidence for any general Lamarckian evolutionary mechanism or for winged pigs. If and when we do, we shall become Lamarckists or porcovolantists --- but at present, the evidence is against it.

This message is a reply to:
 Message 818 by shadow71, posted 02-09-2011 7:42 PM shadow71 has seen this message but not replied

Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.1


Message 822 of 968 (604102)
02-10-2011 1:29 AM
Reply to: Message 819 by shadow71
02-09-2011 7:49 PM


Re: Shapiro's reply
Maybe you should say "mutations are non-random, but their effect on fitness are not yet known and may well be deterministic".
Why should we say that?

This message is a reply to:
 Message 819 by shadow71, posted 02-09-2011 7:49 PM shadow71 has seen this message but not replied

Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.1


Message 823 of 968 (604105)
02-10-2011 1:36 AM
Reply to: Message 818 by shadow71
02-09-2011 7:42 PM


Re: Shapiro's reply
I find on this board a very determinative oppostion to anything that may go against the Darwinain theory.
We have yet to see evidence that goes against the theory.
We are against the idea that we should throw out the theory because it goes against people's religious beliefs.
Thats not the way science should work. Be open to new idea's, don't ridicule, investigate.
Science is also about throwing out ideas that are not supported by the evidence. Deterministic mutations are one of those ideas that is not supported by the evidence.
You have to know when to holdem and when to foldem. Be objective and agreeable to change if it is proven.
How have we not been objective in our rejection of deterministic mutations? I have cited many studies where these genetic engineering systems produce non-deterministic mutations. How many studies have you cited showing the opposite? None. So who is the one not being open minded and objective?

This message is a reply to:
 Message 818 by shadow71, posted 02-09-2011 7:42 PM shadow71 has replied

Replies to this message:
 Message 830 by shadow71, posted 02-10-2011 3:06 PM Taq has replied

molbiogirl
Member (Idle past 2671 days)
Posts: 1909
From: MO
Joined: 06-06-2007


Message 824 of 968 (604151)
02-10-2011 10:52 AM
Reply to: Message 818 by shadow71
02-09-2011 7:42 PM


Re: Shapiro's reply
Maybe you should say "mutations are non-random, but their effect on fitness are not yet known and may well be deterministic".
That's exactly it, shadow.
Shapiro said "highly nondeterministic" and you say "may well be deterministic".
Shapiro said "not intelligently designed" and you say "intelligently designed".
You are using Shapiro's work to justify your beliefs.
You have no interest in understanding his work. None at all. You just want someone with authority to make you feel better about your IDist beliefs.

This message is a reply to:
 Message 818 by shadow71, posted 02-09-2011 7:42 PM shadow71 has seen this message but not replied

Bolder-dash
Member (Idle past 3660 days)
Posts: 983
From: China
Joined: 11-14-2009


(2)
Message 825 of 968 (604152)
02-10-2011 10:58 AM
Reply to: Message 818 by shadow71
02-09-2011 7:42 PM


Re: Shapiro's reply
I find on this board a very determinative oppostion to anything that may go against the Darwinain theory.
I have to say I think you have put it a bit too nicely (you are perhaps more tolerant than me).
What you really have on this board is a bunch of people who on one hand CLAIM to have a love of science, but on the other are in fact zealot preachers for their own brand of a worldview that they want everyone to believe. I mentioned earlier they even have discussions about the best strategies to spread their message to convince all the "fence sitters" out there who happen to be reading this forum. They have long talks about what is the most effective means to spin their ideology. They do not want open inquiry, they do not want all evidence put on the table, they do not want anything that questions the validity of the theory taught in any schools, they do not want other ideas considered.
They wish to continue to propagate the lie that their is bundles and bundles of evidence for a combination of random mutations & natural selection which can account for EVERYTHING living in this world. When asked to provide this bundle of evidence, they simply say it exists, or proclaim that they have made their case. The evidence they proclaim to exist is even more elusive than the definition of the modern synthesis of evolution.
You see this is their final defense as their theory of RM/NS has started to severely unravel-just say change to calling it the modern synthesis. What is included in the modern synthesis? Well, we can't say, but it is everything. Whatever is causing things to evolve, then that's the modern synthesis. Its horizontal gene transfers, or genetics, or mobile genetic elements, or or..it really doesn't matter-the important thing is that ultimately whatever these mechanisms are-they are random, somehow someway-because guidance is the most unacceptable, taboo, unthinkable, unspeakable possibility there is.
So get used to it, it gets worse. They aren't just close mined by accident. They are fervently working towards a cause. DO NOT EVER EVER LET ANY OTHER IDEAS BE CONSIDERED OR GAIN TRACTION. It is an absolute unacceptable threat to their worldview, plain and simple. Just take a look at all the name calling, insulting, ad homiem attacks, and condescension on display, and ask yourself why.
Or just ask them to show you some of their concrete evidence for how RM/NS and a few of their other "completely unguided" mechanisms can account for all the diversity of life as we see it. Ask for evidence, real evidence, and see where that gets you.
Edited by Bolder-dash, : No reason given.

This message is a reply to:
 Message 818 by shadow71, posted 02-09-2011 7:42 PM shadow71 has replied

Replies to this message:
 Message 826 by Taq, posted 02-10-2011 11:38 AM Bolder-dash has not replied
 Message 832 by shadow71, posted 02-10-2011 3:21 PM Bolder-dash has not replied

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