Col' plasmid in bacteria produce

During insetional inactivation, the presence of a chromogenic substrate gives blue coloured colonies if the plasmid in the bacteria does not have an insert. The blue colour is produced by the emzyme

in bacteria plasmid is

in bacteria plasmid is

In order to induce the bacterial uptake of plasmids, the bacteria are made competent by treating them with

In order to induce the bacterial uptake of plasmids, the bacteria are made 'competent' by first treating with :

In bacteria, plasmid is

Plasmids of which bacteria were used to produced the A-chain and B-chain of insulin separately