A transcription unit in DNA is defined primarily by three regions: which are?

Options

1. Structural gene, Transposons, Operator gene
2. Inducer, Repressor, Structural gene
3. Promoter, Structural gene, Terminator
4. Repressor, Operator gene, Structural gene

Correct Answer

Promoter, Structural gene, Terminator

Explanation

Transcription units consist of a promoter (start site), a structural gene (coding sequence), and a terminator (stop site).

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