This document is a presentation about electrophoresis given by Khan Shah Rukh for their 5th semester paper on recombinant DNA technology. It introduces electrophoresis and discusses its principle, types, equipment used, and some applications. The principle section explains that electrophoresis is a separation technique where there are different types, including gel electrophoresis, and it involves various components like a power pack, electrophoretic chamber, buffers, and gel. References used include textbooks on molecular biotechnology, molecular cloning, biophysics, and gene manipulation.