Describe4 marksStandard
The following is a short mRNA sequence that is translated in a eukaryotic cell:
5'-AUG GGU UAA-3'
A codon table for some of the codons is provided below:
| Codon | Amino acid |
|---|---|
| AUG | Methionine (start) |
| GGU | Glycine |
| GGC | Glycine |
| GUU | Valine |
| UAA | Stop |
Describe how this mRNA sequence is translated into a polypeptide. In your answer, include the roles of codons, anticodons, tRNA molecules, and ribosomes.
Also, if a substitution mutation changed the second codon from GGU to GUU, describe how this mutation would affect the polypeptide produced.