Question -
Which of the following has RNA as its genetic material?
Options:
A .  E. coli
B .  Tobacco Mosaic Virus
C .  Agrobacterium
D .  Amoeba
Answer: Option B : B Tobacco mosaic virusis a rodlike virus. TMV capsids are composed of identical protein subunits, which assemble around the viral ssRNA to form a helical structure, with a hollow central cavity.
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