Human insulin is being commercially produced from the transgenic species of which of the following organisms?

E.coli

The correct answer is Option (3)- E.coli

Human insulin is commercially produced from transgenic species of E. coli (Escherichia coli). E. coli has been genetically engineered to produce human insulin, allowing for large-scale production of this important hormone used in the treatment of diabetes. This process involves inserting the human insulin gene into the DNA of the E. coli bacteria, which then serves as a "factory" for the production of insulin through the bacteria's cellular machinery.