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Which one of the following is not a part of a transcription unit in DNA?
A
The structural gene
B
The inducer
C
A terminator
D
A promoter
Detailed Solution
A transcription unit in DNA is defined by three regions: a promoter, the structural gene and a terminator.
An inducer (such as lactose in the lac operon) is a regulatory molecule, not a part of the DNA transcription unit.
An inducer (such as lactose in the lac operon) is a regulatory molecule, not a part of the DNA transcription unit.