DNA Database

 

A DNA database is helpful in solving old crimes but the unwanted truth is that any modern day criminal aware of a DNA database is more likely to leave a cigarette butt he has found on the street or a hair from some-ones comb at the scene of the crime while ensuring his or her DNA is not. There is also the aspect that DNA passes from person to person in a chain exchange plus of course the police could plant it. It could happen.

 

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