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why is the genetic code degenerate?

why is the genetic code degenerate? - Biology Forum

why is the genetic code degenerate? - Biology Forums. Ask questions and discuss the study of Biology. If you have Biology questions from your homework ask them here!


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  #1  
Old 07-08-2009, 12:21 AM
Pipette Filler
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Default why is the genetic code degenerate?



degeneracy allows for genetic change but not poly peptide change. how is this possible? can anyone explain it in english?
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Old 07-11-2009, 07:31 AM
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Default Re: why is the genetic code degenerate?

Degeneracy is basically things that are different structurally but create the same results. Some codons (3 nucleotides that code for an amino acid during translation) may code for the same amino acid. Let's use the example argenine. Multiple codons can code for that specific amino acid but for polypeptides, changing those specific codons may give the same result. For example, say argenine was coded with CGU and was changed to CGC. Both these results may still produce the amino acid argenine, meaning polypeptide didn't change, but the genetic code did change.

I'm not sure if that's the answer you were expecting, but yeah.

Last edited by Kirbzz; 07-11-2009 at 02:33 PM.
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Old 03-20-2010, 02:16 AM
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Default Re: why is the genetic code degenerate?

One of the reasons why the genetic code is degenerate is to allow for "mistakes" or "mutations" from being fatal.
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Old 03-31-2010, 03:04 PM
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Default Re: why is the genetic code degenerate?

Quote:
Originally Posted by Kirbzz View Post
Degeneracy is basically things that are different structurally but create the same results. Some codons (3 nucleotides that code for an amino acid during translation) may code for the same amino acid. Let's use the example argenine. Multiple codons can code for that specific amino acid but for polypeptides, changing those specific codons may give the same result. For example, say argenine was coded with CGU and was changed to CGC. Both these results may still produce the amino acid argenine, meaning polypeptide didn't change, but the genetic code did change.

I'm not sure if that's the answer you were expecting, but yeah.
This is what is commonly referred to as the "wobble effect".
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Old 05-12-2010, 10:41 AM
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Default Re: why is the genetic code degenerate?

In some of the mutations sometimes you land on a amino acid with the same charge as before. Hence, degenerate code may minimize effect of a mutation on protein.
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