and as such are relatively dependent on host cell machinery for transcription and replication, and those that replicate in the cytoplasm, in which case they have evolved or acquired their own means of executing transcription and replication. dsDNA viruses are also commonly divided between tailed dsDNA viruses, referring to members of the realm Duplodnaviria, usually the tailed bacteriophages of the order Caudovirales, and tailless or non-tailed dsDNA viruses of the realm Varidnaviria.

Single-stranded DNA viruses