A DNA sequence 5′ ATGGGGGACACC 3′ encodes the amino acids Met Gly Asp Thr.A mutation changes the sequence to 5′ ATGAGGGGACACC 3′ that encodes the amino acids Met Arg Gly His.What type of mutation has occurred?
A)frameshift mutation
B)missense mutation
C)silent mutation
D)nonsense mutation

Question

Quizplus · Accepted Answer

The insertion of "A" in the sequence shifts the reading frame of the entire sequence following the mutation, changing the amino acids that are encoded downstream. This is characteristic of a frameshift mutation.

A DNA Sequence 5′ ATGGGGGACACC 3′ Encodes the Amino Acids