Biology : PU-CET (U.G) 2016 Panjab University Entrance Exam With Answers

The correct answer is B: Transgenic Species of Escherichia.

Human insulin is commercially produced through genetic engineering techniques using bacteria, specifically the bacterium Escherichia coli (E. coli). In this process, the human insulin gene is inserted into the DNA of the bacteria, which then produces human insulin through protein synthesis. This technique allows for large-scale production of insulin that is identical to the insulin produced by the human pancreas.