Which of the Mutation Types Is Least Likely to Have

question 18

Multiple Choice

Which of the mutation types is least likely to have a phenotypic effect?

• A) Missense
• B) Frameshift
• C) Nonsense
• D) All the mutation types are equally likely to have a phenotypic effect.

---

Definitions:

Myelin Sheaths

Protective coverings around nerve fibers that facilitate the rapid transmission of neural signals.

Synaptic Vesicles

Small sacs within a neuron that store neurotransmitters, which are chemicals released to communicate with adjoining neurons at a synapse.

Dopamine System

A neural system involved in reward, motivation, and the regulation of mood, whose key neurotransmitter is dopamine.

Parkinson's Disease

A progressive neurological disorder characterized by motor symptoms such as tremors, stiffness, slowness of movement, and postural instability.