Home
Class 12
BIOLOGY
In transcription unit, the promoter sequ...

In transcription unit, the promoter sequence is located

A

Towards 5' end upstream of the structural gene

B

Towards 5' end downstream of the structural gene

C

Towards 3' end upstream of the structural gene

D

Towards 3' end downstream of the coding strand

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the location of the promoter sequence in a transcription unit, we can break it down into the following steps: ### Step-by-Step Solution: 1. **Understanding the Transcription Unit**: - A transcription unit consists of three main components: the promoter, the structural gene, and the terminator. 2. **Identifying the Promoter**: - The promoter is a specific DNA sequence where RNA polymerase binds to initiate transcription. 3. **Location of the Promoter**: - The promoter is located upstream of the structural gene. In DNA, "upstream" refers to the direction towards the 5' end of the gene. 4. **Direction of Transcription**: - Transcription occurs from the 3' to 5' direction on the template strand, which means the RNA is synthesized in the 5' to 3' direction. 5. **Clarifying the Strand Orientation**: - The non-template strand runs from 5' to 3', while the template strand runs from 3' to 5'. The promoter is located on the template strand, which is upstream of the transcription start site. 6. **Conclusion**: - Therefore, the promoter sequence is located at the 5' end of the transcription initiation site, which is upstream of the structural gene. 7. **Final Answer**: - The correct answer is that the promoter sequence is located at the 5' end of the transcription initiation site in the transcription unit.
Promotional Banner

Topper's Solved these Questions

  • Mock test 33

    AAKASH INSTITUTE ENGLISH|Exercise EXAMPLE|12 Videos

  • Mock Test 34 Zoology

    AAKASH INSTITUTE ENGLISH|Exercise EXAMPLE|23 Videos

Similar Questions

Explore conceptually related problems

In a transcription unit

Define transcription unit

In a transcription unit promoter is said to be located towards :-

In a transcription unit the terminator is located towards

During transcription

In a transcription unit, the structural gene is monocistronic, In

(a) Construct a complete transcription unit with promoter and terminator on the basis of the hypothetical template strand given below : (b) Write the RNA strand transcribed from the above transcription unit along with its polarity.

(a) Construct a complete transcription unit with promoter and terminator on the basis of the hypothetical template strand given below : (b) Write the RNA strand transcribed from the above transcription unit along with its polarity.

a) Construct a complete transcription unit with promoter and terminator on the basis of hypothetical template strand given below (b) Write the RNA strand transcribed from the above transcription unit along with its polarity

During transcription, if the nucleotide sequence of the DNA strand that is being coded is ATACG, then the nucleotide sequence in the m RNA would be