Question

Mutations can be harmful, helpful, or neutral in their effect. A silent mutation tends to have a neutral effect as it does not result in coding for a different amino acid. Using your mRNA codon chart, give another mRNA codon that this CUU could mutate to and still code for leucine. 4. The mRNA codon CUU could mutate to C________ and still code for leucine, which would not change the amino acid.

Answer 1

The mRNA codon CUU codes for the amino acid leucine. Other codons that also code for leucine are CUC, UUA, and UUG.

Therefore, the mRNA codon CUU could mutate to **CUG** and still code for leucine, which would not change the amino acid.