A mutation that changes the codon GAA to UAA is a _____ mutation.
A)missense
B)nonsense
C)frameshift
D)truncation

Question

Quizplus · Accepted Answer

The original codon GAA codes for the amino acid glutamate, but the changed codon UAA is a stop codon. This means that the mutation results in premature termination of the protein synthesis, leading to a nonfunctional protein. Such mutations are known as nonsense mutations.

A Mutation That Changes the Codon GAA to UAA Is