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Question: Answered & Verified by Expert
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;
BiologyMolecular Basis of InheritanceNEETNEET 2024
Options:
  • A Structural gene, Transposons, Operator gene
  • B Inducer, Repressor, Structural gene
  • C Promotor, Structural gene, Terminator
  • D Repressor, Operator gene, Structural gene
Solution:
1238 Upvotes Verified Answer
The correct answer is: Promotor, Structural gene, Terminator
A transcription unit of DNA is defined primarily by the three regions in the DNA:
(i) A promoter
(ii) The structural gene
(iii) A terminator
The promoter is said to be located towards 5 '-end (upstream) of the structural gene (the reference is made with respect to the polarity of coding strand)
The terminator is located towards 3 '-end (downstream) of the coding strand.

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