Type your answer on the lines below, or write it out on paper.
The table shows an original mRNA codon in a gene and the codons produced by two different base substitution mutations.
| mRNA codon | Amino acid | |
|---|---|---|
| Original | GUU | Valine |
| Mutation 1 | GUC | Valine |
| Mutation 2 | GCU | Alanine |
Identify which mutation does not change the amino acid coded for.
Explain why Mutation 1 does not change the primary structure of the protein but Mutation 2 does.
Suggest how Mutation 2 could change the function of an enzyme made from this gene.