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When YAC is used to clone DNA. What is the size of the DNA that can be cloned?

(a) Large (upto megabases)

(b) Small (upto few hundred bases)

(c) No size restriction

(d) Medium (upto kilobases)

I got this question in unit test.

My doubt is from YAC and Expression Systems topic in section Using Other Organisms of Genetic Engineering

1 Answer

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Best answer
The correct choice is (a) Large (upto megabases)

Easy explanation: YACs are sophisticated cloning vectors that are used for propagating large stretches of DNA which are upto a few megabases.

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