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Which of the following shows coiled RNA strand and capsomeres?

1. Polio virus
2. Tobacco mosaic virus
3. Measles virus
4. Retrovirus

Correct answer: Tobacco mosaic virus

Solution

Tobacco mosaic virus has a helical structure with RNA wound in a coil and protein subunits arranged as capsomeres around it. This matches the description of a coiled RNA strand and capsomeres.

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