Origin of replication (ori): This is a sequence from where the replication starts and thus any piece of DNA, when linked to this sequence, is also replicated within the host cells. Thus, an alien DNA that is linked with the origin of replication can replicate and multiply itself in the host organism. This is known as cloning or making multiple identical copies of any template DNA. Ori sites are also responsible for controlling the copy number of the alien or linked DNA. So, if many target DNA copies are required, they should be cloned in a vector whose origin supports a high copy number.
The sequence that controls the copy number of the linked DNA in the vector, is termed
NEET UG 2020 — Zoology Biotechnology - Principles and Processes
2020mcqmedium
The sequence that controls the copy number of the linked DNA in the vector, is termed
Official previous-year question
Held on 30 Apr 2020 · Verified 9 Jul 2026.
Options
- A
Ori site
- B
Palindromic sequence
- C
Recognition site
- D
Selectable marker
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