Why Is There X-Gal Used in the Cloning Medium

question 75

Multiple Choice

Why is there X-gal used in the cloning medium?

• A)It distinguishes between bacteria that have been transformed with recombinant plasmids and nonrecombinant plasmids by black-white screening.
• B)It distinguishes between bacteria that have been transformed with recombinant plasmids and nonrecombinant plasmids by blue-white screening.
• C)It distinguishes between plasmids that have been transformed and those that have not by blue-white screening.
• D)It distinguishes between plasmids that have been transformed and those that have not by black-white screening.

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