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Which of the following statement is incorrect ?

A. TMV has a double-stranded RNA molecule.

B. Most plant viruses are RNA viruses.

C. The bacteriophage has a double-stranded DNA molecule.

D. Most animal viruses are DNA viruses.

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Correct Answer : A.


Tobacco mosaic virus (TMV) is a single stranded RNA virus that infects a wide range of plants, especially tobacco and other members of the family solanacea. The infection causes characteristic patterns, such as mosaic-like mottling and discolouration on the leaves (hence the name). TMV was the first virus to be discovered.

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