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Q.
Which of the following shows coiled RNA strand and capsomeres?
AIPMTAIPMT 2014Biological Classification
Solution:
Tobacco mosaic virus is a RNA virus that causes tobacco mosaic disease. It has single stranded coiled RNA molecule as its genetic material a part of which hangs outside the protein coat. Protein coat consists of approximately 2130 capsomeres which are helically arranged to form a hollow cylinder of about 4 nm diameter.