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Author Topic:   Early DNA replication systems
jjburklo
Inactive Member


Message 1 of 14 (188152)
02-24-2005 1:37 PM


I was wondering what the current theories are as to early DNA replication systems. It seems that life could never have been passed on if there was never a precursor to the Polymerases we see today. In fact, would there not have had to be a replication system at the time of the first cell being formed? I've done some research, however, the only thing I can find on polymerases are descriptions of function, and nothing touching on the evolutionary precursors to it.

Replies to this message:
 Message 3 by Loudmouth, posted 02-24-2005 5:22 PM jjburklo has replied

  
jjburklo
Inactive Member


Message 4 of 14 (188573)
02-25-2005 6:32 PM
Reply to: Message 3 by Loudmouth
02-24-2005 5:22 PM


Thanks Loud for that link. In any case there would have had to be a precursor to the current Polymerases that DNA uses today. Are there any theories as to those precursors?
I also noticed on that page, however, that the RNA world theory is not being widely accepted.
quote:
At the Salk Institute for Biological Studies, in 1994, Leslie Orgel observes, "Because synthesizing nucleotides and achieving replication of RNA under plausible prebiotic conditions have proved so challenging, chemists are increasingly considering the possibility that RNA was not the first self replicating molecule..."
The site did go on to give some other interesting theories as to the origin of information, none which seemed to hold its weight. It seems that this is serving to be an extremely huge enigma for evolutionists. I also found several other quotes extremely interesting
quote:
To go from a bacterium to people is less of a step than to go from a mixture of amino acids to a bacterium Lynn Margulis
quote:
There is no evidence in life today of anything that produces huge quantities of new, random strings of nucleotides or amino acids, some of which are advantageous. But if precellular life did that, it would need lots of time to create any useful genes or proteins. How long would it need? After making some helpful assumptions we can get the ratio of actual, useful proteins to all possible random proteins up to something like one in 10^500 (ten to the 500th power). So it would take, barring incredible luck, something like 10^500 trials to probably find one
This sums up, to a large extent, my view on the existence of a God. The chance of random, natural, processes is extremely unlikely. While this does not completely rule out evolution, I think this is convincing evidence that there had to be a Creator to have started it all.
This message has been edited by jjburklo, 02-25-2005 18:42 AM

This message is a reply to:
 Message 3 by Loudmouth, posted 02-24-2005 5:22 PM Loudmouth has replied

Replies to this message:
 Message 5 by pink sasquatch, posted 02-25-2005 10:44 PM jjburklo has replied
 Message 8 by Loudmouth, posted 02-28-2005 10:56 AM jjburklo has not replied

  
jjburklo
Inactive Member


Message 6 of 14 (188788)
02-26-2005 7:10 PM
Reply to: Message 5 by pink sasquatch
02-25-2005 10:44 PM


Re: RNA-world theory and the probability of God
Good post Sasquatch. I'll be looking into the sources you presented. Right now, its a bit difficult however. All my classes are compounding and I'm swamped. And this was not my source. This was a source given by Loud.

This message is a reply to:
 Message 5 by pink sasquatch, posted 02-25-2005 10:44 PM pink sasquatch has replied

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 Message 7 by pink sasquatch, posted 02-27-2005 1:29 PM jjburklo has not replied

  
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