Positive-Sense Single-Stranded RNA Viruses

question 27

Multiple Choice

Positive-sense single-stranded RNA viruses

• A) have only a few genes,including one that allows them to make mRNA from their genome.
• B) include viruses that are responsible for causing plant diseases and are referred to as mosaic viruses.
• C) regenerate themselves by reverse transcription.
• D) are polyphyletic and include some viruses that have more than a million base pairs.
• E) have distinct lipids in their plasma membranes.

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