Which of the following is not true w.r.t. copy number of the linked DNA in the vector?

It is equal to the copy number of vector in host cell

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It is controlled by ori sequence

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It is controlled by selectable marker

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Depends on the sequence from where replication starts

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Solution

The correct option is C It is controlled by selectable marker
ori sequence controls the copy number of the linked DNA in the vector.
Origin of replication (ori) is a sequence from where replication starts. If one wants to recover many copies of the target DNA it should be cloned in a vector whose origin supports high copy number.

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