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.
Viruses attaches to a cell. Virus injects its genetic material. The viruses' genetic material takes over the cell functions and the cell produces the virus's proteins and genetic material. The proteins & genetic material assemble into new viruses. The cell bursts and the new viruses are released. What two obstacles did early virus researchers face and how did they overcome them.