An RNA dependent RNA polymerase encoded by the virus

An RNA dependent RNA polymerase encoded by the host

A DNA dependent RNA polymerase encoded by the virus

A DNA dependent RNA polymerase encoded by the virus

An RNA dependent DNA polymerase encoded by the virus

I only

I and III

I, II, and III

III only

Retroviruses

Single-stranded DNA viruses

Double-stranded RNA viruses

Single-stranded RNA viruses

Penetration, replication, transcription, protein synthesis, viral assembly, release

Release, replication, transcription, protein synthesis, viral assembly, penetration

Transcription, protein synthesis, replication, viral assembly, release, penetration

Viral assembly, release, penetration, transcription, protein synthesis, replication

Replication, viral assembly, transcription, protein synthesis, penetration, release

All of these

To modulate host cellular activities

Viruses encode a small number of proteins compared to the host

Viral proteins have many splice variants

Viral proteins exhibit numerous, small, low-specificity binding sites