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Dr. Wagner is investigating a newly discovered, disease causing agent. She

determines that one structure in the agent is double-stranded RNA. What kind of
agent is Dr. Wagner studying?
A.virus
B. Protist
C. Fungus
D. Bacterium

User Dzemal
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1 Answer

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Double-stranded RNA viruses (dsRNA viruses) are a polyphyletic group of viruses that have double-stranded genomes made of ribonucleic acid. ... The two groups do not share a common dsRNA virus ancestor. Double-stranded RNA viruses evolved two separate times from positive-strand RNA viruses. So therefore your answer is A
User MrCarnivore
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