NEET 2026 Biology question
Which of the following statements are correct with reference to a transcription unit? A. A transcription unit in DNA is defined primarily by three regions : promoter, structural gene and terminator. B. The promoter is said to be located towards the 5-end of the structural gene. C. The promoter is a DNA sequence that provides binding site for RNA polymerase. D. The promoter defines the template and coding strands. E. The terminator is located towards the 3-end of the coding strand and it defines the end of the process of transcription. Choose the correct answer from the options given below:
Solution
As per NCERT a transcription unit has three regions: promoter, structural gene, terminator (A true). The promoter lies at the 5 (upstream) end of the structural gene (B true) and is the binding site of RNA polymerase (C true); because the promoter is located at the 5 end of the coding strand
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