Answer these questions concerning promoters. What role do prom...

Question

Answer these questions concerning promoters. What role do promoters play in transcription?

Accepted Answer

Hi, everyone. Let's look at the next question. It says which of the following statements regarding promoters is incorrect choice. A promoters are regions of DNA that are responsible for initiating transcription. Choice B promoters are typically located upstream of a gene choice. C promoters often contain specific DNA sequences that combine transcription factors and choice D promoters are only found downstream of a gene. So let's think through these possibilities. Remembering that we're looking for an incorrect statement about promoters. Well, we hopefully can zoom in pretty quickly on our incorrect statement because if we think about promoters, promoters are that initiation site where transcription begins and thinking about that, let's just rule out choice. A since that says promoters are regions of DNA that are responsible for initiating transcription. So that's true and therefore not our answer. But when we look down at choice D, it says promoters are only found downstream of the gene. Well, the key is that word only because promoters are involved in initiating transcription, they are typically upstream of the gene, definitely not only found downstream of the gene. So choice D is definitely a false or incorrect statement and therefore should be our answer to be thorough. We'll just look at the other choices here. Choice B promoters typically located upstream of a gene, as we said, that is true. And therefore not our answer. And then finally looking at choice C promoters often contain specific DNA sequences that combine transcription factors. That is also true. So not our answer choice. So again, which statement regarding promoters is incorrect choice, D promoters are only found downstream of a gene. See you in the next video.

Answer these questions concerning promoters. What role do promoters play in transcription?

Key Concepts

Promoters

Transcription

Transcription Factors

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