Forensic science and crime investigation has been radically transformed in recent times. Thanks to the PCR machines wherein a revolutionary technique amplifies specific DNA sequences. No wonder it has almost become a focal point in modern forensic analysis and the device has becomes indispensable in forensic laboratories for its ability to amplify small amounts of DNA, turning unimportant samples into forms of evidence.
Why is PCR technology crucial in forensic science and investigation of crime?
Let us get to an in-depth exploration of PCR machines and how this technology remains at the forefront of forensic analysis.
- Amplification of trace DNA
In a majority of crime scenes, the biological evince that that remains is often so small that it seems negligible and degradable. The conventional DNA analysis method often falls flat due to small quantities of DNA. With PCR technology, you can solve this issue and simplify the tiniest samples of DNA and later compare them for analysis. So, PCR machines in forensic science are no less than a revolution; samples that were once considered miniscule and negligible can now be used to create a link between the crime and the potential suspects.
- Identification of victims and suspects
One of the most basic uses of PCR technology in forensics is the generation of DNA profiles. Typically, the DNA profile is similar to a genetic fingerprint and is unique for every individual barring identical twin. Once the experts create a profile from the evidence present in the crime scene, it can be compared to all the profiles of the national DNA database to connect with the possible suspects. With the PCR technology, experts can easily match the crime scene with the suspect while maintaining the highest level of accuracy. At the same time, it also helps in excluding individuals who are not related to the crime and allow the investigations to become more precise and specific.
- Keeping people out of crime
While PCR technology in crime investigation helps in linking individuals to crime, it comes as useful for ruling out those who are in no way related to the incident. DNA testing in the post conviction phase helps in saving individuals who are in no way related to the crime. So, PCR plays a crucial role in eliminating the chances of wrongful conviction.
- Deals with unsolved cases of the past
Several unsolved cases from the past also called cold cases can be reopened with the latest advancements in PCR technology. May old case mysteries can be easily resolved and feasible results achieved with polymerase chain reaction technology. Even if the DNA is degraded badly, the advanced techniques of extraction yields appropriate results. Creating DNA profile from old evidence has helped resolve numerous crime cases.
- Speedy and efficient investigation
Time plays a crucial role in resolving criminal investigations and PCR machine is the breakthrough device. Compared to the conventional technique, PCR for DNA analysis can produce results within hours and provides accurate leads for those involved in the investigation procedure. With PCR, rapid analysis of DNA can be carried out and fast decisions can be made based on genetic evidence.
- Analysis of mixed DNA samples
When resolving complex crime scenes, DNA is often obtained from several individuals. PCR when combined with other technologies allow forensic experts to simplify mixed samples. They can isolate and create individual profiles from a mixture allowing investigators determine who was present at the scene of crime.
PCR technology has continued to evolve and today you have newer and more advanced machines functioning quickly and yielding more accurate results. So, the PCR machine is one of the transformative tools creating heaps of advanced techniques and tools in modern forensic science. From its ability to amplify and analyze DNA from traces of this biological material to helping in different aspects of investigation, polymerase chain reaction is and will remain a cornerstone technology.
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