I am not going to give you a full research report, but one example is DNA fingerprinting via gel electrophoresis. This has definitely had a positive effect on society, as it makes forensics a much more certain and just process. Gel electrophoresis can be used to separate and arrange DNA strands in order of length. You can then compare this arrangement to determine whether or not it matches another DNA arrangement. It has a very high accuracy rating, so you can be almost certain that if you have two electrophoresis results that look identical, that both DNA samples belong to the same person. This is compelling evidence that can either acquit or condemn suspects with certainty.
