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.