A single base substitution mutation is likely to have a less harmful effect when the base change results in which of the following?
A) a stop codon
B) a codon that specifies the same amino acid as the original codon
C) an amino acid substitution that alters the tertiary structure of the protein
D) an amino acid substitution at the active site of an enzyme

Question

Quizplus · Accepted Answer

A single base substitution that results in a codon specifying the same amino acid as the original codon (a synonymous mutation) often has no effect on the protein's function, making it less likely to be harmful compared to the other options listed.

A Single Base Substitution Mutation Is Likely to Have a Less