How do forensic scientists determine what evidence is important?
If a decomposing body is found in the woods somewhere, forensic scientists can use DNA, dental records, and other evidence to identify the person, determine the cause of death, and sometimes determine if the body contains material from another person who may have been present at the time of death.
What are some of the problems with forensic evidence and its use in the courtroom?
Bite marks are a controversial piece of forensics that are sometimes used in the courtroom. Crime scenes can also be disturbed by innocents, which can lead to forensic evidence being collected on the wrong person. This happened in the case of Amanda Knox. Evidence can also be polluted if it was collected incorrectly.
Why is science so important in the examination of evidence in criminal investigations?
Understanding How Forensic Science is Used in a Criminal Investigation. Forensic science is one of the most important aspects of any criminal investigation, as it can allow the authorities to do everything from positively identify a suspect in a crime to determine exactly when and how a crime occurred.
What do forensic scientist do with physical evidence?
Using the physical evidence from the crime scene, it’s the forensic scientist’s job to extract as many clues from that item as possible. They analyze the evidence for the presence of any bodily fluids, tissue, or hair and perform a chemical extraction process to remove DNA from the stain.
What is the purpose of physical evidence I mean I know I need to collect physical evidence but why?
Physical evidence is any and all objects that can establish that a crime has been committed or can provide a link between a crime and its victim or perpetrator. Physical evidence aids in the solution of a case, provides an element of the crime, such as fear or force, and proves a theory in the case.
What types of evidence are inadmissible?
The general rule is that any statement, other than one made by a witness while giving evidence in the proceedings, is inadmissible as evidence of the facts stated. However, this rule only applies if the statement is given as evidence of the truth of its contents.