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Name the site where the upstream sequences located
 

Option: 1

before start point 
 


Option: 2

after start point 
 


Option: 3

right border of DNA 
 


Option: 4

In the middle of DNA 
 


Answers (1)

 

 

As we have already studied in Introduction to Transcription & Transcription Unit -  

 

Start point is the first base pair from which transcription starts. Upstream sequences are located prior to the start point known as +1 or initiation site while sequences after the start point are called downstream of it. Hence, the correct option is (a).
 

Posted by

Kshitij

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