So in medicine, we can use biotechnology to synthesize a variety of different types of proteins and enzymes and hormones. So these biological molecules that are used by our body we can also detect the presence of different types of abnormalities and conditions that might be found in some specific individual. Now, in forensic science we can use biotechnology for instance, to determine whether or not an individual might have been present at a crime scene or might have committed a crime as we'll see in just a moment. Now, where did biotechnology actually come from? How did it arise? Well, biotechnology came from our understanding of how nucleic acids actually work how they function and how the biological systems in nature use these nucleic acids in the first place.