Question

Which of these viruses have a $ssRNA$?

• A. $\varphi \times 174$
• B. $T_2$ bacteriophage
• C. Pox virus
• D. $TMV$

Answer 1

The correct option is D $TMV$

Tobacco mosaic virus (TMV) is a positive sense single stranded RNA virus that infects tobacco and other members of the family Solanaceae. Tobacco mosaic virus has a rod like appearance. Its capsid is made from 2130 molecules of coat protein and one molecule of genomic single strand RNA made of 6400 bases. Poxvirus contains double stranded DNA genome. The phi X 174 bacteriophage is a single stranded DNA virus. T2 bacteriophage contains double stranded DNA. So the correct answer is 'TMV'.