Consider the following specific codon in an mRNA sequence:

5' - CAG- 3'

Suppose this codon undergoes a nonsense mutation, which of the following codons can possibly result from this type of mutation?

• A. 5' - CAC- 3'
• B. 5' - AUG- 3'
• C. 5' - CAU- 3'
• D. 5' - UAA- 3'

Answer: (D)