Viruses which have only RNA as a genetic material are called ___ .

Viruses are the connecting link betweeen the living and the non-living. They do not contain the cellular machinery and the plasma membrane. However, they do contain genetic material in the form of either DNA or RNA. The viruses that contain RNA as their genetic material are called retroviruses. HIV which causes AIDS is an example of a retrovirus and has only RNA as its genetic material.