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NEETZoologyMolecular Basis of Inheritance

What is the role of a promoter in a transcription unit?

Options

  1. ATo prevent RNA from being translated into protein
  2. Bprovides binding site for RNA polymerase
  3. CTo initiate the process of replication
  4. DTo catalyze the polymerization of RNA

Correct answer

B. provides binding site for RNA polymerase

Step-by-step solution

The promoter and terminator flank the structural gene in a transcription unit. The promoter is said to be located towards the 5' -end (upstream) of the structural gene (the reference is made with respect to the polarity of the coding strand). It is a DNA sequence that provides binding site for RNA polymerase , and it is the presence of a promoter in a transcription unit that also defines the template and coding strands. By switching its position with terminator, the definition of coding and template strands could b

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