Oct. 3, 2014
Period 1
Before DNA fingerprinting, it was impossible for investigators to directly connect a person to evidence found at the crime scene which resulted in many unsolved crimes and wrongful convictions. Blood evidence could be collected from crime scenes; however, it could not be confirmed that it belonged to a suspect. Soon, fingerprints came along and produced a stronger identification, but DNA changed it all. To give an example, in 1987, DNA fingerprinting was used to clear a chief suspect and find the real killer of a murder case. Now, law enforcement officials can connect DNA profiles to crimes and evidence through CODIS. This method has become very efficient and important in identifying criminals of many cases
Sources:
http://www.grundyco.org/departments/coroner/item/the-changing-role-of-forensic-science
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