Question:medium

Blue-white screening is based on the activity of:

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Remember: \[ \beta\text{-galactosidase} + \text{X-gal} \rightarrow \text{Blue color} \]
• Blue colony \(\rightarrow\) Non-recombinant plasmid
• White colony \(\rightarrow\) Recombinant plasmid

Updated On: Jun 6, 2026

Lac Repressor
\(\beta\)-galactosidase
Alkaline phosphatase
\(\beta\)-galactoamidase

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The Correct Option is B

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The “Ti plasmid” of Agrobacterium tumefaciens stands for
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List-I	List-II
A. ETS Complex I	I. NADH Dehydrogenase
B. ETS Complex II	IV. Succinate Dehydrogenase
C. ETS Complex III	II. Cytochrome b_c1
D. ETS Complex IV	III. Cytochrome C oxidase