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Author Topic:   Is there a border dividing life from non-life?
Wounded King
Member
Posts: 4149
From: Cincinnati, Ohio, USA
Joined: 04-09-2003


Message 63 of 132 (130965)
08-06-2004 10:17 AM
Reply to: Message 61 by sidelined
08-05-2004 9:57 PM


Re: Do non-living systems
When you say that enzymes mutate all you are actually talking about is mutations in the protein coding regions of the DNA for that enzyme. Unless there was something on that site of yours which actually specified a way of making reproducible enzyme variants without changing the DNA/RNA coding for them, which I doubt.
So all you are really asking is whether DNA is alive.
TTFN,
WK

This message is a reply to:
 Message 61 by sidelined, posted 08-05-2004 9:57 PM sidelined has not replied

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 Message 65 by Loudmouth, posted 08-06-2004 1:53 PM Wounded King has replied

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


Message 66 of 132 (131287)
08-07-2004 7:22 AM
Reply to: Message 65 by Loudmouth
08-06-2004 1:53 PM


Re: Do non-living systems
In which case they aren't reproducible because they aren't reproducing, not beacuse you can't do it more than once, perhaps heritable would have been a better way to phrase it. You can't have post-transational modifications with nothing to translate, and the post seem to imply no role for gnetic material, all you are doing is moving the mutation from the coding region of one enzyme to the coding region of the protein doing the post-translational modification not removing the genetic component. The evolution is still clearly in the genetic sequence and not in the enzyme.
Perhaps you could have an environmental factor causing a post-translational modification without the involvement of another protein but I don't se how this could be heritable.
TTFN,
WK
This message has been edited by Wounded King, 08-07-2004 06:23 AM

This message is a reply to:
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