During transcription, the DNA site at which RNA polymerase binds is called:

During transcription, the DNA site at which RNA polymerase binds is called:
  1. promoter
  2. regulator
  3. receptor
  4. enhancer

Solution

Promoter region is the proximal area of transcription unit, which provides site for attachment of transcription factors ( $\sigma$ factor) and RNA polymerasc. It is present upstream at 5' end of coding strand. It has special structure; an AT rich area called TATA box or Pribnow box.

Asked in: NEET 2003

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