What is Genetic Engineering?

Genetic engineering involves altering an organism's genetic code to achieve a desired trait by inserting a gene from one organism into another's DNA. To understand this, it's essential to know that DNA acts as an instruction manual for the body, with specific genes coding for proteins that form the organism's parts and traits. All living things share the same genetic code, allowing scientists to use enzymes to cut and insert DNA segments.

A practical example of genetic engineering is the creation of Humulin, a medication for diabetics. Scientists identify the human DNA segment that codes for insulin, extract it using enzymes, and insert it into bacteria's DNA. These modified bacteria then produce human insulin, which can be rapidly multiplied to meet demand for diabetic patients who lack sufficient insulin.

Genetic engineering holds immense potential for scientific insight into gene function. However, it also faces controversy, particularly concerning genetically modified foods. The video references an upcoming discussion on GMO foods.