NEETZoologyMolecular Basis of Inheritance
What is the function of the promoter in a transcription unit?
Options
- AIt provides a binding site for RNA polymerase
- BIt defines the coding and template strands
- CIt defines the end of the process of transcription
- DNone of the above
Correct answer
A. It provides a 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 be