Q. T.O. Diener discovered a:
A) Free infectious DNA
B) Infectious protein
C) Bacteriophage
D) Free infectious RNA
Explanation
[Solution from source] In 1971 T.O. Diener discovered the viroid, the agent of potato spindle tuber disease, which is a free low-molecular-weight RNA without a protein coat. An infectious protein is a prion, not a viroid. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.