What is the scientific method ,and how is the theory applied to fingerprint analysis? The complete friction ridge identification process involves using the "identification philosophy and scientific methodology" in determining whether or not an "unknown friction ridge impression"(herein, called latent) came from the same source as a "known inked print (herein called print)to the exclusion of all others. (1) David Ashbaugh refers to this identification process as, "a guide of how friction ridge quantative-qualititive analysis is transformed into an opinion of individuality. It describes the friction ridge formations used during analysis while establishing parameters as to how much knowledge one must have to perform such a task." Analysis, …show more content…
Red Flags are abnormalities in the lift and provide many cautions. They are contained within the latent or surrounding areas . These include: *Double taps *Similar shaped ridge path formations *Matrix smears *Colur reversals *Inconsistancies in ridge width *Light or dark areas *Sudden directional change in ridge flow. *Does the lift appear consistant with the surface from which it was lifted? When a Latent Print Examiner considers any of these red flags, and how
Introduction: In this frog population, traits such as eye color, skin color, and the presence or absence of spots are coded for by DNA. The nitrogenous bases in a strand of DNA make up an organisms genotype. The physical expression of the genotype is the phenotype.
If I were to choose a career in corrections I would pursue a position as a Fingerprint Specialist. As a Fingerprint Specialist you have to know how to communicate effectively rather it's through e-mail, in person or by telephone with their supervisors.Those are some of the main key points in becoming a Specialist. Also, collecting, examining, analyzing and comparing partial or latent fingerprint to identify suspects or inmates in a criminal cases. As, a Fingerprint Specialist you have to adhere to the policies, procedures and laws as it relates to their career. This position would be suited for me because I'm able to handle exposure to upsetting situation, speak well and be detailed oriented so I can take the appropriate report in any giving
Any moist or wet biological evidence (blood, body fluids, plants, etc.) like the lottery ticket on the counter with the blood smeared print on it should be collected wearing gloves it should then be placed in a clean unused paper container such an envelope, and or small bag and transported back to an evidence receiving area, it should then be taken out of the bag and allowed to air dry thoroughly. The Ninhydrin process should be applied to this piece of evidence to obtain noticeable prints.
During investigating a crime scene there is very important databases that can help make or break a case. Some examples of certain databases they use are National Integrated Ballistic Information Network (NIBIN), The Integrated Automated Fingerprint Identification System (IAFIS), and Combined DNA Index System (CODIS). Using these certain databases can help you solve a crime more efficiently because you can find answers you need more quickly with the technology that is now provided.
The use of fingerprinting as a means of identification was born out of the need of law enforcement officials to have permanent records that could determine if a convict had been previously arrested or imprisoned. Before the advent of fingerprinting, law enforcement used a number of different methods to try to accomplish this. Ancient civilizations would tattoo or physically maim prisoners. In more recent times, daguerreotyping (that is, photographing) was used, but proved to be less than reliable, because people had the ability to dramatically alter their appearance (Skopitz). As a result, this method too, became obsolete with the discovery of fingerprinting, an absolutely infallible
Fingerprint comparison has always interested me because of the uniqueness in friction ridge detail. As a fingerprint expert, you learn that there are no two individual in the world that have the same fingerprints. Individuals can share the same DNA but their fingerprints will always be different. Examiners may be able to find two fingerprints that have many of the same characteristics, but not exactly the same as in the case of the Madrid bombing. The basics of fingerprint comparison will always be the same. However, it fascinates me how procedures change, and make fingerprint comparison more of a science.
Identify at least three forensic science procedures that were introduced by Arthur Conan Doyle in his stories of Sherlock Holmes. Explain how those procedures have affected modern day forensic science. A few of the forensic science procedures that were introduced by Arthur Conan Doyle in his stories of Sherlock Holmes are the protection of the crime scene, blood evidence, the study of minute evidence like blood splatter, different smells, shoe prints, and gun powder or residue. Also Sherlock studied soil, minerals, and rocks.
FINGERPRINT EXPERIMENT2AbstractLatent print residue is a combination of many substances excreted from the body. Latent print residues may be left from natural sweat on the skin or from a contaminant such as motor oil, blood, ink, paint or some other form of dirt. They may exhibit only a small portion of the surface of a finger and may be smudged, distorted, overlapped by other prints from the same, or from different individuals, or all of these in combination. The factors that affect the quality or presenceof latent prints include the conditions involved between friction skin contact and the objects that are touched. Pre-transfer conditions describe the condition of the friction skin and the amount and type of residue on the skin; and are affected
All over the world and as far as many people can remember, fingerprints have been used as a symbol of truth and justice in the forensics domain. The art of fingerprinting has been seen as a closure to many major crimes that have put many people in prison. However, in his article “Do Fingerprints Lie?” Michael Specter examines that fingerprinting has given rise to many questions as of the late 20th century. Fingerprints have been taken for granted, almost like money, which in this century, people believe is the best item to be handed to us. People tend to take what they hear, and just go with it without research or background knowledge. This practice has not been challenged as many concepts should. Specter brings in a solid argument with a lot of knowledge to support his claims and factual evidence to set his article with high credibility. While Specter builds a strong argument, he fails to consider how fingerprints have improved the forensic process.
In the forensic science field, “A Latent Print is an impression of the friction ridge skin of the fingers or palms of the hands that has been transferred to another surface.” To break apart the phrase, “latent print”, the term “latent”, means “hidden” and the term “print” means “an indentation or mark left on a surface or soft substance by pressure especially that of a foot or hand.” So the phrase “latent prints”, refers to any print that must be enhanced chemically or physically to be made visible. Another way to define “latent print”, is simply sweat that is exuded from the body. Friction ridge skin is the only part of the body that doesn’t exude oil. The only oil that may be in a latent print has been picked up by touching another area of the body (face or ears for example) or some foreign object.”
Abstract; This paper explors the effects DNA fingerprinting has had on the trial courts and legal institutions. Judge Joseph Harris states that it is the "single greatest advance in the search for truth since the advent of the cross examination (Gest, 1988)." And I tend to agree with Judge Joseph's assertion, but with the invention and implementation of DNA profiling and technology has come numerous problems. This paper will explore: how DNA evidence was introduced into the trial courts, the effects of DNA evidence on the jury system and the future of DNA evidence in the trial courts.
Every time somebody touches something, they leave behind a unique signature that forever links them to that object. This link is their fingerprints, which are unique to every person, for no two people have the same set, not even family members or identical twins. Palms and toes also leave prints behind, but these are far less commonly found during crime scene investigations. Therefore, fingerprints provide an identification process that is applicable to background checks, biometric security, mass disaster identification, and most importantly, crime scene investigations. Fingerprints are so differentiated because they are made up of distinct patterns of ridges and furrows on the fingers. The ridges are the “raised” portions of the prints, and the furrows are the “recessed” portions. This perceived uniqueness has led some people to falsely accept fingerprint analysis as absolute scientific fact. Although overall fingerprints are reliable, there are definitely situations where their accuracy can come into question.