Which of the following is NOT true for a clon | vedclass

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(A) cloning vector is a $DNA$ molecule used as a vehicle to artificially carry foreign genetic material into another cell. Key features of a cloning v

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Two origins of replication

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(A) cloning vector is a $DNA$ molecule used as a vehicle to artificially carry foreign genetic material into another cell. Key features of a cloning vector include: $1$. Origin of replication $(ori)$: This is the sequence where replication starts. $A$ vector should have only one $ori$ to control the copy number of the linked $DNA$. $2$. Selectable marker: Helps in identifying and eliminating non-transformants. $3$. Cloning sites: The vector should have very few,preferably single,recognition sites for commonly used restriction enzymes. Therefore,having 'two origins of replication' is not a characteristic of a standard cloning vector,as it would lead to instability and difficulty in controlling copy number. Thus,option $A$ is the correct answer.

Which of the following is $NOT$ true for a cloning vector?

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