The physical and biological worlds, and our knowledge of them, are evolving constantly.
Viruses, being totally dependent on the cell for replication, their evolution must have been …

Viruses act as independent evolutionary units in continuous interaction with their host
organisms. The evolutionary strategies of DNA and RNA viruses differ.

Viruses are a large group of parasites of cells; they use either deoxyribonucleic acid (DNA)
or ribonucleic acid (RNA) as genetic material, and are dependent on host cell metabolism …