Crime in today's world has become so usual that people are kind of getting used to it. Crimes are happening in such a rapid rate nowadays that, time factor is of major importance in the process of crime solving.scientists have been trying to provide the police with new advanced crime solving techniques which would minimize this time factor to a considerable extent.DNA testing is one of the most advanced as well as accurate person identification technique which helps in solving a crime more efficiently.
Every person in this world has a unique hereditary material called DNA or deoxyribonucleic acid, which present in every cell of ones body.So if we get a single cell of a person , we can identify him accurately by testing his DNA.But still this technology has limitations...!! Most genetic tests take 24-72 hours but the time taken for DNA to go from crime scene to identification can span as long as 14 days. By the time that the results are back, the suspects often have been released.
To overcome this drawback of DNA testing, scientists from University of Arizona and Forensic Science Service ,UK have built a chip that can copy and analyze DNA samples taken from a cotton swab. Forensic technicians can collect DNA from suspects by swabbing their mouth, mixing the sample with a few chemicals, and warming it up. The DNA-testing-lab-on-a-chip does the rest. The entire process takes only four hours at present but the research team is already optimizing it and reducing the cycle time down to two hours.
"With the test, police could check on whether a person’s DNA matches that found at past crime scenes while suspects are still being processed and before a decision on whether to release them on bail has been made. Portable DNA testing could also be used in disasters such as earthquakes to identify victims", the researchers said.
The researchers also envisage a time in the near future when DNA could be identified by such small instruments using the technology that testing could be done in a police car or by immigration officials as a border with the goal of proving identification, thereby repelling terrorists and other criminals.
So lets hope the new technology helps in at least providing justice to the victims and makes the work easier for police and hence increasing their efficiency.