Question

The genetic material of polio virus is

• A. RNA
• B. DNA
• C. RNA and DNA
• D. dsDNA

Answer 1

The correct option is A RNA

Poliovirus, the causative agent of poliomyelitis, is a human enterovirus. It is composed of an RNA genome and a protein capsid. The genome is a single-stranded RNA genome with about 7500 nucleotides long.

Both RNA and DNA cannot be the genetic material at the same time.

Very few viruses use DNA as their genetic material. Example: TMV (tobacco mosaic virus).

So, the correct option is 'RNA'.