Recombinant DNA is a form of artificial DNA created by combining genetic material from different sources. Scientists use this technique to insert genes from one organism into another, allowing for the study of gene function and the production of proteins. This process is essential in fields like medicine, agriculture, and biotechnology. The creation of recombinant DNA involves several steps, including cutting DNA with specific enzymes, joining the DNA fragments, and introducing the new DNA into a host organism. This technology has led to advancements such as the development of genetically modified organisms (GMOs) and the production of insulin for diabetes treatment.