4. It is known that HIv uses RNA Polymerase Ii in mammalian cells to synthesize the viral rna Please describe(1)RNa Polymerase Ii catalyzed transcription initiation; (2)how HIV transcribes full length viral rna by interfering with this process. (30 points) 5. Regulation of transcription in eukaryotes is largely achieved by the domain structure of transcription factors. please describe four major domain structures and how they contribute to transcription regulation(20 points)4. It is known that HIV uses RNA Polymerase II in mammalian cells to synthesize the viral RNA. Please describe (1) RNA Polymerase II catalyzed transcription initiation; (2) how HIV transcribes full length viral RNA by interfering with this process. (30 points) 5. Regulation of transcription in eukaryotes is largely achieved by the domain structure of transcription factors. Please describe four major domain structures and how they contribute to transcription regulation (20 points)