what is genetic engineering in humans
Genetic engineering. Photo by: Gernot Krautberger. Genetic engineering is any process by which genetic material (the building blocks of heredity) is changed in such a way as to make possible the production of new substances or new functions.As an example, biologists have now learned how to transplant the gene that produces light in a firefly into tobacco plants.enetic engineering. Photo by: Gernot Krautberger. Genetic engineering is any process by which genetic material (the building blocks of heredity) is changed in such a way as to make possible the production of new substances or new functions.