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Nuetrik [128]
3 years ago
12

What are the two types of reactions that are needed for PS to even begin?

Biology
1 answer:
Lana71 [14]3 years ago
3 0
Light-dependent reactions and the Calvin cycle light-independent reactions.
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Answer:

Results in a hairpin loop structure in RNA, AND results in the polymerase falling off the DNA template.

Explanation:

As the RNA polymerase arrives at the terminator site, it pauses. The termination of RNA transcription occurs when an RNA transcript with a self-complementary sequence is formed leading to the formation of the hairpin structure. The hairpin structure has 15-20 nucleotides.  

The hairpin structure of RNA weakens A=U base pairs in RNA-DNA hybrid and/or weakens the interaction between RNA and RNA polymerase. The overall effect is the dissociation of RNA polymerase from the complex and termination of the transcription.

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