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  3. Which company has prepared two DNA sequences corresponding to two chains of insulin

. Which company has prepared two DNA sequences corresponding to two chains of insulin

(a)Novartis

(b)Ranbaxy

(c)Pfizer

(d)Eli lily

Best Answer

Ans.(d) In 1983, Eli Lilly an American company prepared two DNA sequences corresponding to A and B, chains of human insulin and introduced them in plasmids of E. coli to produce insulin chains. Chains A and B were produced separately, extracted and combined by creating disulfide bonds to form human insulin.

 

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