Question

a. Draw a schematic representation of the structure of a transcription unit and show the following in it: 

i. Direction in which the transcription occurs 

ii. Polarity of the two strands involved 

iii. Template strand 

iv. Terminator gene 

b. Mention the function of promoter gene in transcription.

Answer 1

a.

i. Transcription occurs in 5′→3′.

b. Promotor gene has DNA sequence that provide binding site for RNA polymerase.