How DNA is Collected At A Crime Scene
DNA testing is highly accurate. The odds that a test is wrong is 350 million to one. DNA is the most accurate peice of scientific evidence a lawyer can have. Two sampels are taken from the suspect and one is taken from the crime scene. The sample can be blood, semen, hair, skin tissue, pretty much anything that has cells in it. The sampels dont even have to be the same materials! how cool is that! After you have the samples you extract the DNA from both samples and they are studied and compared. If the DNA samples are a match it is proof that the suspect was at the scene of the crime!