A retrovirus is an RNA virus that is replicated in a host cell via the enzyme reverse transcriptase to produce DNA from its RNA genome. The DNA is then incorporated into the host's genome by an integrase enzyme. The virus thereafter replicates as part of the host cell's DNA. Retroviruses are enveloped viruses that belong to the viral family Retrovirida.
A retrovirus is a type of RNA virus that uses the enzyme reverse transcriptase to convert its RNA genome into DNA once inside a host cell. This DNA is then integrated into the host cell's genome, allowing the virus to replicate along with the host cell. Examples of retroviruses include HIV and HTLV.