Which of the following shows a coiled RNA strand and capsomeres?
Correct answer: B. Tobacco mosaic virus
- A. Polio virus
- B. Tobacco mosaic virus
- C. Measles virus
- D. Retrovirus
Explanation
Tobacco Mosaic Virus fits the description you provided. Tobacco mosaic virus is an RNA virus that causes tobacco mosaic disease. It has a single-stranded coiled RNA molecule as its genetic material, a part of which hangs outside the protein coat. The protein coat consists of approximately 2130 capsomeres, which are helically arranged to form a hollow cylinder of about 4 nm diameter.
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