Stock Photo: RNA INTERFERENCE. Interfering RNA RNAi _ stage 2. In the cytoplasm of the cell_host, replication of the viral single_stranded RNA into double_stranded by RNA replicase RNA dependent RNA polymerase. The replication of the RNA occurs for the negative_stranded RNA viruses. Interfering RNA is a mean for the cell to destroy the RNA parasites viruses RNA, transposons. In the cytoplasm, proteins Dicer, visible here in background, then RISC, associated to a fragment of RNA RNA guide, link to the molecul