NEETZoologyMolecular Basis of Inheritance
What is the role of the structural gene in a transcription unit?
Options
- ATo initiate the process of transcription
- BTo define the boundaries of the region of DNA that would be transcribed
- CTo encode the information for the synthesis of a particular protein
- DTo prevent RNA from being translated into protein
Correct answer
C. To encode the information for the synthesis of a particular protein
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