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Inorganic Evidence In Criminal Investigation

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Evidence used in Karen Cranky Murder Case
Forensic Evidence is the analysis of chemical evidence, which can be used as vital evidence in a crime investigation. The principles of forensics involve the Locard’s Exchange Principle, which is that a criminal will bring something and take something from the crime scene which can be used as forensic evidence. Forensic evidence is usually examined by a forensic orthodontist There are two types of forensic evidence used in the Karen Cranky Murder Case which were organic and inorganic. Inorganic evidence, mainly consists of inorganic compounds such as metallic elements. Examples of inorganic evidence include glass, paint and ballistics. Organic evidence involves any type of compound containing carbon, …show more content…

Soil evidence can be used to convict a victim due to the many varieties of soil. Soil can vary by its colour, for example red to black soil. It can vary by its texture which is how much of certain substances does the soil have, for example of sand, clay and manure. It can also vary by density of materials which can be tested by applying water to the soil. Soil can also be varied by factoring its acidity or pH. These properties of soil are compared with soil at different locations to find the matching composition, which enables investigators to spot where the soil came from and therefore where the suspect came from. The soil at the crime scene contained 40% manure, which enabled investigators to determine that the suspect was a gardener since manure is used as fertilizer for …show more content…

It works in general by isolating DNA and cutting in the VTNR regions which are the repetitive lengths in the chromosome. The fragments are then sorted depending on their size and compared with the DNA specifications on board the database. Another method of DNA fingerprinting is accounting for short tandem repeats (STR) which works by counting the repetition of short fragments of DNA. One technique of analyzing DNA is methylation analysis, which involves finding variations in Methyl components of the DNA, which alters from person to person, sometimes creating deadly diseases such as cancer. The technology involved in the analysis of DNA includes a robot used by the FBI, which analyses, DNA by cutting it into fragments and placing it on a mass spectrometer which identifies different lengths of DNA by weighing the

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The arson evidence relates to the car crash and how the car was burned to hide the evidence. The evidence from the bite mark cleared up my client, John’s story who stated he was in a bar fight the night prior to when being questioned. The use of blood spatter helped investigators determine where the victim was killed in the cabin and how many possible killers there were. Blood detection helped discover what killed the

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The CSI Effect: Juror's Perception Of Forensic Evidence

641 Words | 3 Pages

This has resulted in an increased demand for prosecution to produce viable and tangible forensic evidence, in order to satisfy the high standard of proof in criminal proceedings. Donald E. Shelton conducted a survey in which he wanted to discover the amount of jurors that expected the prosecution to provide some form of scientific evidence; his findings showed that “46 percent expected to see some kind of scientific evidence in every criminal case. 22 percent expected to see DNA evidence in every criminal case. 36 percent expected to see fingerprint evidence in every criminal case. And 32 percent expected to see ballistic or other firearms laboratory evidence in every criminal case.”

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This was achieved by identifying the suspect. According to the gel, suspect number two’s DNA was found at the crime scene. This is known because the crime scene DNA and suspect two’s DNA both traveled the same distanced. And said before DNA is very polymorphic; no two pieces of DNA will be the same when cut by the same enzyme (Edvotek, 2014). This is also shown in Hyun-Jung Choi’s lap report.

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1267 Words | 6 Pages

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“Physical evidence usually involves objects found at the scene of a crime. Physical evidence may consist of all sorts of prints such as fingerprints, footprints, handprints, tidemarks, cut marks, tool marks, etc.” (US Legal, 2015). Examining physical evidence found at the crime scene allows investigators to link related crimes through forensic analysis to establish a crime series. Offender Description Offender description is another important factor to link offenders to a crime series.

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Forensic science pioneer Dr. Edmond Locard explains that witness credibility varies by the witness and the incident, along with the type of senses that perceived the episode. Touch, odor and taste exhibit low threshold of evidential value. The direction of sounds and their source are also faulty and subjective. Even visual perceptions are subject to significant errors in estimates of distance and sizes of crowds. Add tricks of memory and the unremitting creations of the imagination, the weaknesses of the senses are further complicated.

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