Q.166) Which of the following genetically engineered organisms was used by Eli Lilly to prepare human insulin?
A) Phage
B) Bacterium
C) Yeast
D) Virus
166) Eli Lilly, an American company, prepared the first genetically engineered human insulin using recombinant DNA technology. In this method, two DNA sequences corresponding to the A and B chains of human insulin were inserted into bacteria (E. coli). These bacteria then produced the insulin chains, which were later purified and chemically joined to form active insulin.
Hence, the correct answer is Option (2).