5. Mutations in DNA occur when there is a change in the base-pair sequence of a gene. Which of these is not an accurate statement about mutations?
A. Most mutations occur when a cell copies its DNA for cell division.
B. Mutations can involve adding, removing, or substituting genes.
C. Mutations always cause a change in the in the way an organism looks.
D. Mutations can be beneficial . Which of these is not an accurate statement about mutations?