TS EAMCET Medical 30 Jul 2022 Shift 1 Paper

Question : 37 of 160

Marks: +1, -0

A foreign DNA is ligated at Pst site of pBR322 plasmid then introduced into E. coli cells. Which of the following statements identifies the chimaeric vector E. coli cells?

Growth of E. coli cells on ampicillin containing medium but not on tetracycline containing medium but not on ampicillin containing medium
Growth of E.coli cells on tetracycline containing medium but not on ampicillin containing medium
Growth of E. coli cells on both ampicillin and tetracycline media
Using ampicillin resistant gene as selectable marker

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