A mutation changes a codon from AAA (encoding lysine)to AGA (encoding arginine)in yeast,but no mutant phenotype is detected when the mutant strain is plated and grown on minimal or complete medium.This type of mutation is called:
A)synonymous.
B)suppressor.
C)nonsense.
D)missense.
E)frameshift.

Question

Quizplus · Accepted Answer

This mutation changes the amino acid encoded by the codon (from lysine to arginine), which classifies it as a missense mutation. Missense mutations result in the substitution of one amino acid for another in the protein product.

A Mutation Changes a Codon from AAA (Encoding Lysine)to AGA