Question
Biology Question on Transcription
A transcription unit in DNA is defined primarily by the three regions in DNA and these are with respect to upstream and down stream end;
A
Repressor, Operator gene, Structural gene
B
Structural gene, Transposons, Operator gene
C
Inducer, Repressor, Structural gene
D
Promotor, Structural gene, Terminator
Answer
Promotor, Structural gene, Terminator
Explanation
Solution
A transcription unit in DNA consists of three regions:
the promoter (which initiates transcription),
the structural gene (which codes for a protein),
and the terminator (which signals the end of transcription).
These three components are key to the transcription process in both prokaryotes and eukaryotes.