If a mouse of over eight times its normal size has been produced by introducing human growth hormone gene, the technique involved is called

Growth hormone is a peptide hormone that stimulates growth, cell reproduction and regeneration in humans and other animals. Genetic engineering, also called genetic modification, is the direct human manipulation of an organism's genome using modern DNA technology. It involves the introduction of foreign DNA or synthetic genes into the organism of interest. The most common form of genetic engineering involves the insertion of new genetic material at an unspecified location in the host genome.