Question

For production of human insulin in Escherichia coli, the human insulin gene is linked to which region?

Options

• the promoter sequence of the cow's casein gene

• the luciferase gene from a firefly

• the β-galactosidase promoter region of the E. coli

• the structural gene for human growth

Answer 1

Human insulin is produced by linking the human insulin gene to the β-galactosidase promoter region of the E. coli. This is a medical application of recombinant DNA technology.