What are transgenic bacteria? Illustrate using any one example.
Transgenic bacteria contain foreign gene that is intentionally
introduced into its genome. They are manipulated to express the
desirable gene for the production of various commercially
An example of transgenic bacteria is E.coli. In the
plasmid of E.coli, the two DNA sequences corresponding to
A and B chain of human insulin are inserted, so as to produce the
respective human insulin chains. Hence, after the insertion of
insulin gene into the bacterium, it becomes transgenic and starts
producing chains of human insulin. Later on, these chains are
extracted from E.coli and combined to form human insulin.
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