Which of the following shows coiled strand and copsomeres?

Options

A. Polio virus
B. Tobacco mosaic virus
C. Measles virus
D. Retrovirus

Answer

B

Explanation

(b) In TMV RNA is single stranded (ss) helically coiled structure containing about 2130 capsomeres, which is basic subunit of capsid (an outer covering of protein that protects the genetic material of a virus). There are about 16 capsomeres present in each helical tum.