A mutation that occurs when a base is inserted into or deleted from a DNA sequence, completely altering the subsequent sequence of codons, is a
A)frameshift mutation.
B)missense mutation.
C)silent mutation.
D)nonsense mutation.

Question

Quizplus · Accepted Answer

A frameshift mutation occurs when a base is inserted or deleted from the DNA sequence, which shifts the reading frame of the codons, potentially altering the entire amino acid sequence downstream of the mutation.

A Mutation That Occurs When a Base Is Inserted into or Deleted