Final answer:
The effect of a tautomeric shift-induced mutation on the amino acid sequence cannot be determined without specific details about the nature of the shift and the resulting codon. The available options describe missense, silent, and nonsense mutations, but the question lacks the necessary information to choose among them.
Step-by-step explanation:
The question pertains to the effect of a tautomeric shift-induced mutation on the amino acid sequence of a gene, when the change occurs in a single codon on the coding (nontemplate) strand. In this context, the options provided relate to different outcomes that a point mutation may have on protein synthesis:
- Missense mutation occurs when a point mutation changes a codon to one that encodes a different amino acid, potentially affecting the protein's function.
- Silent mutation takes place when the changed codon still encodes the same amino acid due to the redundancy of the genetic code, thus having no effect on the protein.
- Nonsense mutation is when the mutation converts a codon into a stop codon, resulting in premature termination of protein synthesis and a potentially nonfunctional protein.
In order to determine the effect of the mutation on the amino acid sequence, we would need to know the specific nature of the tautomeric shift and the resulting codon. However, the information provided in the question does not include these details; therefore, the correct answer is d) not enough information to determine.