NEET Botany Molecular Basis of Inheritance Questions Solved

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With the following help of a schematic diagram, explain the location and the role of the

following in a transcription unit:

Promoter, Structural gene, Terminator.

             Schematic structure of a transcription unit

Promoter: It is a DNA sequence that provides binding site for RNA polymerase. It 

is the presence of a promoter in a transcription unit that also defines the template 

and coding strand.

Structural gene: The DNA sequence coding for mRNA or tRNA or rRNA

Terminator: It is present towards 3' end of the coding strand. It ends the process of transcription.

 

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