The promoter site and the terminator site for transcription are located at

3 (downstream) end and 5 (upstream) end, respectively of the transcription unit

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5 (upstream) end and 3 (downstream) end, respectively of the transcription unit

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the 5 (upstream) end

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the 3 (downstream) end.

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Solution

The correct option is C 5 (upstream) end and 3 (downstream) end, respectively of the transcription unit
The promoter sequence needs to lie in front of the start site or upstream to it in the 5' end and the terminator should lie in the 3' end downstream as transcription proceeds in the 5' to 3' direction.
So, the correct answer is, '5 (upstream) end and 3 (downstream) end, respectively of the transcription unit'.

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Similar questions

Assertion : The UTRs are present at both 5' -end and at 3' -end of tRNA

Reason : They are required for an efficient transcription process

\to

D_{1} a n d C_{1}

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