mistel
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Hi,

What are the characteristics of the Genetic Code?

It says in my book,

- Triplet Code

- Degenerate Code

- Wide Spread but not universal

Could some one explain these points as these may specifically be needed for the exam board.


Thanks a lot!
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TSR Jessica
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Sorry you've not had any responses about this.

Why not try posting in a specific subject forum- you might have more luck there.

Here's a link to our subject forum which should help get you more responses.

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SANTR
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(Original post by mistel)
Hi,

What are the characteristics of the Genetic Code?

It says in my book,

- Triplet Code

- Degenerate Code

- Wide Spread but not universal

Could some one explain these points as these may specifically be needed for the exam board.


Thanks a lot!
A gene is a section of DNA, it is a sequence of bases. The sequence of bases produce a particular polypeptide (a protein prior to folding etc). The sequence of bases determine the sequence of amino acids which in turn turn determine the polypeptide produced. When an mRNA strand is attached to a ribosome, the base sequence is read in triplets i.e. ATC, GGT etc, one codon (Triplet of bases) codes for one amino acid.
The degenerate nature of the genetic code: it is the idea that there are multiple codons for the same amino acid, in other ATT and AGC can both potentially code for the same amino acid. There are only a limited number of amino acids, about 20 or so but 64 possible combinations of codons.
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