Respuesta :
Answer: Which of the following statements correctly compares transcription in prokaryotes and eukaryotes?
Explanation: It would be B
The correct comparison between transcription of prokaryotes and Eukaryotes is that prokaryotes have one type of RNA polymerase, whereas eukaryotes have at least three.
Prokaryotes Transcription:
- Only three promoter elements: -10, -35 promoters, and upstream elements.
- Prokaryotes have only one type.
- In prokaryotes, transcription and translation occur simultaneously.
- Polyadenylation do not occur in prokaryotes.
- Transcribed mRNAs in prokaryotes are polycistronic.
- In prokaryotes, termination is done by either rho-dependent or rho-independent mechanisms.
Eukaryotic Transcription:
- Eukaryotes contain many different promoter elements: TATA box, initiator elements, CAAT box, etc.
- There are three types of RNA polymerases, I, II, and III in Eukaryotes,
- The RNA is transcribe in the nucleus and then translate in the cytoplasm.
- Eukaryotic mRNAs are monocistronic.
- Termination is done by two elements: a poly(A) signal and a downstream terminator sequence.
Therefore, the correct comparison between transcription of prokaryotes and Eukaryotes is that prokaryotes have one type of RNA polymerase, whereas eukaryotes have at least three.
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