Mass DNA Crimes

257 Words2 Pages
DNA is an impressive technology, and can solve crimes that traditional policing methods cannot; however mass DNA sampling does not work, in fact DNA sampling follows the laws of diminishing returns. In my the more DNA that is taken, the less useful it is, as the more likely it is that a false match is made. For example, if DNA is taken from a murder scene the DNA of the murder victim, the murderer, anybody who went to the scene will be there. If 100% of the population is on the DNA database, there is a 100% chance that, if there are 3 DNA samples at the murder scene, one will be a false match. First, violent crimes are often committed by people with a prior criminal history. Having their DNA on file can speed up the investigative process
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