Forensics

Biotechnology

What is it?

Forensic science is a science that applies scientific analysis to the justice system, often to help prove the events of a crime. Forensic scientists analyze and interpret evidence found at the crime scene. That evidence can include blood, saliva, fibers, tire tracks, drugs, alchohol, paint chips and firearm residue. The police, the government, and other agencies apply this to crimes

How Forensics is Used

When there is a murder, suspicious fire or hit-and-run accident, police and rescue workers aren't the only ones in on the investigation. Forensics scientists also play an important part. They will take samples collected at the scene and analyze them in a forensics laboratory. With a little work and some very high-tech equipment, forensic scientists can help law enforcement catch even the craziest of criminals.

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DNA Profiles

Everybody has a different DNA profile for the exception of identical twins. DNA profiling is basically matching a DNA sample to the victim or the criminal

DNA Profiles in Solving Crime

The results from DNA profiles may be used in court. For example, the samples collected from a crime scene might match the DNA of a suspect. This could be used as evidence that the suspect had been present at the crime scene – but it does not necessarily prove that the suspect committed the crime.

DNA evidence is rarely the sole basis of a prosecution case. It is most useful when placed alongside other evidence, such as fingerprints, footprints, crime scene examination and eyewitness accounts. Other biological evidence may also be collected, for example blood splash patterns (showing the direction of the injury) and microbial information (which may give clues as to the time of death).

Who Uses Forensics ( Jobs )

  • Criminalistics- the application of various scientists to trace evidence, determine impression evidence such as finger prints and tire tracks.
  • Forensics Ballistics- the science of dealing with investigation of use of fire arms and ammunition.
  • Forensic Anthropology- the application of physical anthropology in a legal setting, usually for the recovery and identification of skeletonlized human remains.
  • Forensic DNA Analyst-work in forensic crimes,where they conduct tests on samples. Catalog DNA profiles and evidence. Conduct DNA tests and DNA purification and Florescent DNA analysis.

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Alec Jeffreys

Sir Alec Jeffreys has worked in the DNA profiling and genetics sciences. He paved the way for much of modern forensic investigation. Jeffreys is a well known professor and geneticist. He had an idea of using DNA to identify people while studying X-ray images of a DNA experiment he was running in his lab. His techniques are used all over the world to catch criminals-in addition to resolving paternity disputes.