; Reverse transcribing viruses : Reverse transcribing viruses with RNA genomes ( retroviruses ) use a DNA intermediate to replicate . Those with DNA genomes ( pararetroviruses ) use an RNA intermediate during genome replication . Reverse transcribing viruses with RNA genomes ( retroviruses ) , use a DNA intermediate to replicate , whereas those with DNA genomes ( pararetroviruses ) use an RNA intermediate during genome replication .