1. DNA (Deoxyribonucleic acid): This is a double-stranded molecule that contains the genetic code of the virus. Examples of DNA viruses include the Herpes virus, Varicella-zoster virus (causes chickenpox), and the adenoviruses.
2. RNA (Ribonucleic acid): This is a single-stranded molecule that can be either positive-sense or negative-sense. Positive-sense RNA viruses can be directly translated into proteins by the host cell's ribosomes. Negative-sense RNA viruses need to be transcribed into a complementary strand of RNA before they can be translated. Examples of RNA viruses include the influenza virus, HIV (Human immunodeficiency virus), and the Coronavirus family.
