11. An E. coli cloning vector would usually contain all of the following EXCEPT:
(A) an E.coli ori
(B) a MCS for insertion of the gene of interest
(C) a bla gene that confers ampicillin resistance on the host
(D) a telomere sequence so that it is recognized as a chromosome
(E) a lacZ gene that's used for blue/white color selection
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