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  4. If you want to recover many copies of the target DNA, you will choose a vector

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Q. If you want to recover many copies of the target $DNA$, you will choose a vector

Biotechnology : Principles and Processes

Solution:

Vectors that have high number per cell will have high copy number of their genome within the bacterial cell. If we link an alien piece of $DNA$ with vector, we can multiply its number equal to the copy number of the vector. Any piece of $DNA$ when linked to the $'ori$ sequence, can be made to replicate within the host cells. This property of $'ori$ is used to make a number of copies of the linked $DNA$. If we want to obtain many copies of the target $DNA$, then it should be cloned in such a vector whose $'ori$ supports high copy number.