Refer to the Figure Above and Then Answer the Question

Multiple Choice

Refer to the figure above and then answer the question that follows.
-Which of the following choices is an example of a mutation?

A) a place in DNA where the base sequence has been permanently changed
B) an altered compound in the Neurospora pathway that synthesizes amino acids
C) an incompletely replicated piece of DNA
D) an agent that damages DNA, such as X rays
E) a strand of DNA that is not paired with a complementary strand