Classification (Identification) Evidence is classified according to their basic characteristics, classification places objects within a group of similar objects. Individualization. Implies uniqueness of an item or person among members of its class comparison of questioned items with known items to find a common origin.
What are the 3 classification of physical evidence?
3) According to the general nature of items, the physical evidence can be classified as physical, chemical, or biological.
What are class characteristics in forensics?
Class Characteristics are properties of physical evidence that can be associated only with a group and never with a single source. If evidence is determined to possess class characteristics it may serve as a mechanism to reduce the number of suspects, but it cannot be directly connected to one person or source.
Which two scientists are credited with the fingerprint classification system?
Henry Faulds (1843-1930) in 1880 proposed using ink for fingerprint determination and people identification, and Francis Galton (1822-1911) collected 8000 fingerprints and developed their classification based on the spirals, loops, and arches.
What are the 4 types of forensic analysis?
Traditional forensic analysis methods include the following:
- Chromatography, spectroscopy, hair and fiber analysis, and serology (such as DNA examination)
- Pathology, anthropology, odontology, toxicology, structural engineering, and examination of questionable documents.
What are the 10 common types of physical evidence?
- firearms and fired ammunition,
- toolmarks, tire tracks, and footwear impressions,
- hairs, fibers, glass, paint, and other trace evidence.
What are 5 types of physical evidence?
- Blood, semen, and saliva. These substances are subjected to serological and biochemical analysis for determination of identity and possible origin. …
- Documents. Any handwriting and typewriting examined for authenticity or source.
- Drugs. …
- Explosives. …
- Fingerprints. …
- Fibers. …
- Firearms and ammunition. …
Who is the father of forensics?
About The Father of Forensics
His name was Bernard Spilsbury—and, through his use of cutting-edge science, he single-handedly brought criminal investigations into the modern age.
Is Blood Type Class evidence?
Class evidence consists of substances such as blood and hair, which can be used to place an individual in a general class but cannot be used to identify an individual. For example, blood typing can be used to establish whether someone has A, B, AB, or O blood, but cannot point to a person.
Why is blood type class evidence?
If the victim defends himself/herself from an attacker using an object and the object draws blood from the attacker, the investigators can narrow down the suspect from the blood type identified on that object. …
What are the 3 types of fingerprints?
The three fingerprint class types are arches, loops, and whorls. Arches are the least common type of fingerprint, occurring only about 5% of the time.
Who is the father of fingerprint classification?
The pioneer in fingerprint identification was Sir Francis Galton, an anthropologist by training, who was the first to show scientifically how fingerprints could be used to identify individuals. Beginning in the 1880s, Galton (a cousin of Charles Darwin) studied fingerprints to seek out hereditary traits.
What are the 3 fundamental principles of fingerprints?
Fingerprints have three basic ridge patterns: “arch”, “loop” and “whorl”.
What are the 10 areas of forensic science?
What are the 10 areas of forensic science?
- Trace Evidence Analysis.
- Forensic Toxicology.
- Forensic Psychology.
- Forensic Podiatry.
- Forensic Pathology.
- Forensic Optometry.
- Forensic Odontology.
- Forensic Linguistics.
What are the 3 branches of forensic science?
Some of the major Branches of Forensic Science include:
- Forensic Biology.
- Forensic Chemistry.
- Forensic Anthropology.
- Forensic Dentistry.
- Forensic Behavioral Sciences.
What are different forensic jobs?
The following are 10 common jobs you can pursue within the forensic science field:
- Fingerprint analyst.
- Evidence technician.
- Forensic science technician.
- Forensic specialist.
- Forensics manager.
- Forensic investigator.
- Forensic accountant.
- Forensic engineer.