Every person has a unique DNA and therefore it is a very accurate and primary evidence to investigate crimes for law enforcement assistance. It is used to investigate suspects by identifying the criminals who took part in the incidence (Shoester, 2006). DNA is used as primary source evidence in solving cold cases. These are cases that are kept hanging or pending waiting for discovery of new evidences. Cases of murder are also sort out using DNA with samples collected and assessed. Forensic, homicide, sexual assault cases and property crimes are also investigated using DNA. These kinds of cases are investigated using DNA as their primary source in various ways.

A study done in Florida shows that 52% of murder and sexual harassment cases were put in the database for break-in convictions. When the DNA is used, a hit of the DNA profile is able to match with those profiles in the database. This investigation helps in identifying suspects which becomes the primary source of investigation Bulman P., (2014).

Experts in criminal justice have also discovered property crime crooks that penetrate into people’s premises. Burglars in particular have been arrested severally using the technique of DNA as the primary evidence of the investigations Bulman P., (2014). DNA therefore plays an important role in getting hold of criminals who would not have been captured through other means of investigation.

Forensic cases are also best investigated using DNA. This is done through DNA profiling that was developed by Sir Alec Jeffreys in 1880s (Shoester, 2006). DNA for these cases is done by extracting samples cells of the people who were involved at the place of the incidence. Other body fluids such as blood, semen, saliva and urine are also used to ease the process (Shoester, 2006).

References

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Shoester, M. V. (2006). Forensics in law enforcement. New York: Nova Science Publishers.

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