Читать книгу Principles of Virology - Jane Flint, S. Jane Flint - Страница 130

Cells have no RNA-dependent RNA polymerases that can replicate the genomes of RNA viruses or make mRNA from RNA templates (Box 3.3). One solution to this problem is that RNA virus genomes encode RNA-dependent RNA polymerases that produce RNA from RNA templates. The other solution, exemplified by retrovirus genomes, is reverse transcription of the genome to dsDNA, which can be transcribed by host RNA polymerase.