A plant pathologist discovers an infectious agent causing stunted growth in potatoes that lacks a capsid and consists only of RNA. What is this agent?
Q1. A plant pathologist discovers an infectious agent causing stunted growth in potatoes that lacks a capsid and consists only of RNA. What is this agent?
Answer: Viroids
Explanation: Viroids consist solely of circular RNA without a protein coat. Prions are tempting but they consist only of proteins without nucleic acids.