If the First Nucleotide in a Codon Is Mutated to a Different

Multiple Choice

If the first nucleotide in a codon is mutated to a different nucleotide, what would be the effect on the encoded protein?

A) A missense mutation from one encoded amino acid changing to another.
B) It depends on what the changed nucleotide is.
C) A frameshift mutation for all of the subsequent amino acids in the protein.
D) No effect as the problem nucleotide would be corrected by RNA editing mechanisms.
E) A silent mutation and no change in the encoded amino acid.