The dolphins comprise the extant families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the new world river dolphins), and Pontoporiidae (the brackish dolphins), and the extinct Lipotidae (baiji or Chinese river dolphin).
The answer should be C. Once the host cell transcribes a viral gene, the RNA is formed. The RNA is then translated in order to give us the viral proteins essential for the replication of the virus So the answer is when a cell transcribes a viral gene, the host cell then translates it.
When a retrovirus infects a cell. 1  its molecules of reverse transcriptase are carried into the cell attached to the viral RNA molecules. 2  The reverse transcriptase synthesizes DNA copies of the RNA. 3  These enter the nucleus and are. 4  inserted into the DNA of the host.