18) What kind of mutation causes extensive damage in the DNA? a. Point mutation c. Frame shift mutation b. Chromosomal mutation d. Nonsense mutation

c. Frame shift mutation.

Explanation:

Frame shift mutation is a type of mutation which causes more damage to the DNA of the cell. It causes changes in the amino acid sequences in a polypeptide chain. Point mutation is a type of mutation in which only one amino acid changed, while on the other hand, frameshift mutation changes the whole sequence of amino acids so we can say that frame shift mutation is more damaging to the DNA molecule.