Recombinant DNA technology involves transferring DNA between organisms to produce useful genetic combinations. It has led to many important products in medicine, agriculture, and industry. Some key applications include producing human insulin to treat diabetes, interferon to fight viruses and cancer, growth hormones, blood clotting factors, vaccines, herbicide-resistant crops, and proteins used in medical research and treatments. While recombinant DNA technology has benefits, further research is still needed to address challenges and safety concerns for its long-term, widespread application.