General > Biology

Policeing Mutations/ error repear

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Botsareus:
Num Quote:

--- Quote ---And to be honest, trying to police mutations is impossible. There'll always be mutations we deem 'pointless' that fall through any cracks we leave. And some 'pointless' mutations are actually worth developing. Just let them do whatever you can possibly imagine. Something interesting is bound to develop.
--- End quote ---

Is the real dna writtin in a sertain way that its possible to police some easy errors?like:


--- Quote ---cond
30
20
>
start
is the same as:

--- Quote ---cond
4
1
>
start
--- End quote ---

--- End quote ---

shvarz:
Real DNA is a total mess from any programmer's point of view :)

There are no conditions and no commands and everything is analog, not digital.  I am not sure what you mean by your question, but if I understand you right then the answer is "No, there is no easy way for organism to monitor its own mutations, no matter how silly they are".

Look at genetic code:  Say you want to encode an aminoacid cysteine.  Then you write:

UGU

this is the code for cysteine

But then it mutates into

UGC

What happens?  Nothing.  Because UGC is also a code for cysteine.

Then it mutates into

UGG

And now what happens?  Now it means Tryptophan.

Then it mutates to

UGA

Now what happens?  Now it means "STOP", so that any commands that go after it are not read at all.

Does that answer your question?

Botsareus:
Thx Shvartz , I forgot that real Dna has no conditions at all...

Numsgil:
Well, to say real DNA has no conditions isn't exactly accurate.

The DNA itself doesn't have conditions, but there are regulatory proteins that bind to the DNA to prevent transcription under certain circumstances.

Also, the enzymes that are produced can have built in regulation sites that limit the activity.

shvarz:
Yeah, you are right.  But it is so much more complicated than simple condition that I did not want to go into explaining all that.

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