Why do public security personnel take the Dαn exam?

The public security organs collect DNA to supplement the information base, which is convenient for solving crimes, and basically all diseases can be found out.

As the name implies, DNA fingerprint means that DNA is as unique as human fingerprint. A person's DNA fingerprint is like a common bar code in everyone's life.

DNA detection technology can not only help the police catch criminals, but also help good people clear their grievances. In the 20 years since the advent of this technology, 350 people convicted of felony have been released in the United States alone. DNA detection technology can help the police solve crimes, because just like fingerprints, everyone is unique.