Exhibit 13D the Plasmid PSU922 Is a Circular DNA Containing

question 40

Multiple Choice

Exhibit 13D The plasmid pSU922 is a circular DNA containing 25000 base pairs. The β -gal gene codes for the enzyme β -galactosidase, the product of which will turn bacterial colonies blue when grown in the presence of X-gal; the Amp^R gene confers ampicillin resistance. Refer to Exhibit 13D. In three separate vessels, the plasmid is treated with the restriction endonucleases Eco RI, Bam HI, and Hind III. Which of the following best represents the electrophoretic gel one would see from these digests?

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