An insertion or deletion that alters the reading frame is a:
ASilent mutation
BPoint mutation
CTransition mutation
DFrameshift mutation
Answer & Solution
Correct answer: D. Frameshift mutation
1. The protein is usually nonfunctional.
2. This is a frameshift mutation.
3. Adding three bases is less harmful than one.
_Source: OpenStax Biology 2e, Chapter 14, DNA Structure and Function (CC BY 4.0)._
Keep practising DNA Structure and Function
Browse all DNA Structure and Function questions for AP Biology, or explore more Biology topics.