Zoology-Genetic Engineering
NEET Zoology Genetic Engineering MCQ Question
Type: MCQ-fact-Hard-Class 12
What is the role of the origin of replication (ori) in a cloning vector?
A
It initiates replication and controls the copy number of linked DNA.
B
It acts as a selectable marker to identify transformants.
C
It facilitates the cutting of DNA fragments by restriction enzymes.
D
It allows for the movement of DNA fragments during gel electrophoresis.
Correct Answer
Option A
Detailed Explanation
The origin of replication (ori) is a sequence from where replication starts, and it controls the copy number of the linked DNA, enabling recovery of many copies of the target DNA.
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