Immunological Techniques
The IPTG is a gratuitous inducers of (β-galactosidase, and x-gal is a chromogenic substrate. When α-complementation occurs which colour is produced?

White
Blue
No colour is produced
Brown

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Immunological Techniques
Different form of a plasmid, on an agarose gel, after electrophoresis may be in which of the following sequence in decreasing molecular weight?

Open circular, linear plasmid, super coiled plasmid
Open circular, super coiled, linear plasmid DNA
Linear plasmid, open circular, super coiled plasmid
Open circular, super coiled, linear plasmid DNA

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