You arrive at a crime scene as a forensics analyst. At the scene you find blood, saliva, and semen of the suspect. You decide to use DNA fingerprinting to match against the suspect.
What is DNA fingerprinting, and how may it be used in identifying the suspect?
DNA fingerprinting, also known as DNA profiling or genetic fingerprinting, is a technique used to analyze and compare DNA samples from individuals. It involves identifying variations in certain regions of the DNA that are unique to each individual, creating a "fingerprint" that can be used for identification purposes.
In this particular case, the DNA samples found at the crime scene (blood, saliva, and semen) can be analyzed and compared to a DNA sample from a potential suspect. If the DNA fingerprints from the two samples match, it provides strong evidence that the suspect was present at the crime scene. Conversely, if the DNA fingerprints do not match, it helps to eliminate the suspect as a potential culprit.
DNA fingerprinting can also be used to link suspects to other crime scenes or to identify unknown individuals in cases where DNA evidence is available. It is a highly accurate and reliable method of identification that has revolutionized forensic science in recent years.