Nuclear DNA Testing
An example of the Locard Exchange Principle in a crime is if someone is strangled to death and you find a suspect with the victim's skin cells under his nails. The case is then solved. The Locard Exchange Principle helped with this case because it shows that during the contact of the victim and the murderer (during contact of two surfaces), the skin cells were left on the murderer's nails (transfer of evidence is created).
microscopes are used in labs, medical field, surgeries, astronomy and crime investigation field
microspectrophotometer
Shoe prints are used in an investigation to identify a person or persons who may have committed a crime. The prints themselves leave marks, such as the stamp of the brand name.
by taking fingerprints or if we have a sample of hair or saliva or blood
He had a solid alibi, so we eliminated him as a suspect in the crime.
A moulage can be used to make of mold of shoe or tire impressions and then be used for comparison of suspect's shoes or vehicle when investigating a crime.
The term "suspect" is still used when there is some evidence the person was involved. The term "person of interest" is used when authorities want to interview someone that could be a potential suspect, a witness, or who may have some information pertaining to the crime.
Criminal profiling is legal and commonly used by law enforcement agencies to assist in criminal investigations. It involves analyzing behavior patterns and characteristics to generate a profile of a potential suspect. However, it is important to note that profiling should only be used as a tool to aid investigations and should not be the sole basis for making an arrest or charging someone with a crime.
Simply, A fingerprint can prove the precense of any suspect at a crime scene. If you have a suspect and you have a fingerprint lifted from a piece of evidence, and the two match, the chances are that your suspect was at the scene of the crime sometime recently.
In most cases DNA fingerprints are used in identifying crime suspects. If there are fingerprints left at a crime scene then DNA fingerprints are used to attempt to identify the suspect. There is a database of criminal fingerprints that prints can be matched to if they are in the database.
Not necessarily. It would depend on how much other evidence there is. By itself, DNA on a cigarette only proves that the suspect was physically present at the scene of the crime. It proves he was there at some unknown time, but it does not prove that he was there during the commission of the crime or that he committed the crime. It is a compelling piece of evidence, but it would need to be accompanied by other evidence, in order to ensure a conviction. For example, if eyewitnesses saw the suspect's car fleeing the scene, and if bullets matching those used in the crime were found at the suspect's home, THAT, combined with the DNA on the cigarette, would probably be enough to convict.
One major use of fingerprinting is related to criminal investigations. fingerprints can often be used to identify the perpetrator of a crime. Fingerprints are used to identify unknown victims, witnesses or suspects, to verify records, and most importantly, as links between a suspect and a crime.
forensics
forensics is used for identification matters. DNA analysis, with recent technological advances makes it much easier to connect a suspect to a crime scene.
In general, suspicious is used, although suspect can by itself e used as an adjective."He looked suspicious""He looked suspect"
The police will come and question you if you have not previously reported to them that the gun has been stolen or that you have sold it (and asked them to alter the registration of ownership). You may be arrested if they are not satisfied with your answers. You will be a suspect for the crime. Why own a gun in the first place!.