Viruses Join The Circular Rna World Tan 21 The Febs Journal Wiley Online Library
RNA viruses replicate their genomes via one of two unique pathways—either by RNAdependent RNA synthesis, or among the retroviruses, by RNAdependent DNA synthesis (reverse transcription) followed by DNA replication and transcription RNA viruses have RNA as genetic material, that may be a singlestranded RNA or a double stranded RNA Viruses may exploit the presence of RNAdependent RNA polymerases for replication of their genomes or, in retroviruses, with two copies of single strand RNA genomes, reverse transcriptase produces viral DNA which can be integrated into the host
