A Question About DNA
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A Question About DNA         


Author: Devils Advocaat
Date: Aug 5, 2008 09:21

Can anyone tell me if a DNA strand (or helix) formed abiotically has a
length limit before it becomes unstable?
6 Comments
Re: A Question About DNA         


Author: Tim Tyler
Date: Aug 6, 2008 09:31

On Aug 5, 5:21
no comments
Re: A Question About DNA         


Author: Devils Advocaat
Date: Aug 7, 2008 09:30

On 6 Aug, 17:31, Tim Tyler googlemail.com> wrote:
> On Aug 5, 5:21
no comments
Re: A Question About DNA         


Author: Tim Tyler
Date: Aug 8, 2008 09:37

Devils Advocaat wrote:
> On 6 Aug, 17:31, Tim Tyler googlemail.com> wrote:
>> On Aug 5, 5:21 pm, Devils Advocaat yahoo.co.uk> wrote:
>>> Can anyone tell me if a DNA strand (or helix) formed abiotically has a
>>> length limit before it becomes unstable?
>> DNA is an "advanced" molecule which does not form prebiotically.
>
> As far as I am aware, prebiotic and abiotic are not the same thing,
> "pre-" means before, and "a-" means without.
>
> And if one was to place the monomers of DNA into a test-tube or
> beaker, and presuming that polymerisation was spontaneous, how long a
> strand (or helix) of DNA would form before it became unstable, if at
> all?

Primed isochiral nucleotides and test tubes are both biotic: without
life, there's no DNA.
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Re: A Question About DNA         


Author: Joachim Pimiskern
Date: Aug 8, 2008 09:37

"Devils Advocaat" yahoo.co.uk> schrieb:
> Can anyone tell me if a DNA strand (or helix)
> formed abiotically has a length limit before it
> becomes unstable?

A company, Codon Devices, seems to be the
record holder in manufacturing long DNA strands.

http://www.forbes.com/sciencesandmedicine/2006/07/12/dna-artificial-genes-codon-cz_mh_0713codon...

Regards,
Joachim
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Re: A Question About DNA         


Author: Devils Advocaat
Date: Aug 9, 2008 22:32

On 8 Aug, 17:37, Tim Tyler googlemail.com> wrote:
> Devils Advocaat wrote:
>> On 6 Aug, 17:31, Tim Tyler googlemail.com> wrote:
>>> On Aug 5, 5:21 pm, Devils Advocaat yahoo.co.uk> wrote:
>>>> Can anyone tell me if a DNA strand (or helix) formed abiotically has a
>>>> length limit before it becomes unstable?
>>> DNA is an "advanced" molecule which does not form prebiotically.
>
>> As far as I am aware, prebiotic and abiotic are not the same thing,
>> "pre-" means before, and "a-" means without.
>
>> And if one was to place the monomers of DNA into a test-tube or
>> beaker, and presuming that polymerisation was spontaneous, how long a
>> strand (or helix) of DNA would form before it became unstable, if at
>> all?
>
> Primed isochiral nucleotides and test...
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Re: A Question About DNA         


Author: Tim Tyler
Date: Aug 10, 2008 11:23

Devils Advocaat wrote:
> On 8 Aug, 17:37, Tim Tyler googlemail.com> wrote:
>> Primed isochiral nucleotides and test tubes are both biotic: without
>> life, there's no DNA.
>
> Can you provided supporting evidence for this assertion?

See Chapter 1 of Genetic Takeover (1988), paying special attention
to the 20 problems in the section entitled:

"The implausibilty of prevital nucleic acid"

....starting on page 56.
>> DNA - however formed - breaks down over a period of years by splitting
>> up, at a rate which depends on the temperature. With a long enough
>> molecule, the average time to the first break could be made to be five minutes.
>> Is that what you are after?
>
> No, sorry, but it isn't, as you haven't really answered my question.

"Can anyone tell me if a DNA strand ... has a length limit before
it becomes unstable?"
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