During the 19th century the study of fingerprints had emerged. The past few centuries we have had numerous developments in fingerprinting. A lot of people give this credit to Francis Galton, who conducted the first study of fingerprint patterns. Galton’s research showed that no two fingerprints are identical; his theory on fingerprints changed the world and the criminal justice system as a whole. Galton studied numerous fingerprints and came to the conclusion that not even identical twins will have the same fingerprints. This finding helped build the justice system and forensic science as we all once knew it. According to Galton fingerprint impressions fall into three different categories, they are loop, arch, and whorl. Another fingerprint known as latent print is a fingerprint that is formed by sweat. This type of fingerprint is not visible to the naked eye; usually a gray or black powder is used to pick up latent prints. Now that we know the three basic categories of fingerprinting, we must take a better look at how fingerprints are identified. Once we understand how they’re identified to others, we will look at some of the landmark cases that helped DNA become what it is today.
In 1987, United States used DNA evidence to prosecute and convict a serial rapist. It all started in Florida when a woman was awoken by noise. She woke up and a man was standing over her holding a knife towards her, threatening to kill her if she didn’t comply. While she was being raped she started fighting back, she was cut on her neck, legs, feet, and face. Once she was raped the rapist stole her purse and left her home. The victim reported the crime to police shortly after. During an examination a rape kit was performed and evidence of semen was f...
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...one else. Unfortunately, often times when a homeless person is victimized they are easily overlooked and not always given a chance to confront their attackers. In 2005, a case came about that shook the neighborhoods of St. Petersburg Florida. A woman by the name of Sara Lynn Wineski was brutally raped and strangled. On May 25th of 2005, neighbors heard screams and said it sounded like someone was being tortured, yet no one bothered to look into it or call the police. The following afternoon a body of a woman was found under a deck behind a home. DNA evidence was collected at the scene but there was little progress and too much suspects. It wasn’t until 2010 that Raymond Samuels DNA was a match to the DNA found on Wineski. Samuels was already serving time for attempted murder and kidnapping. He will be extradited from Ohio to Florida to serve out his life sentence.
As we learned this week, DNA databases are used by various governmental agencies for several different purposes. We all have seen new magazine shows such as, 20/20 or Dateline, that show the collection of DNA samples from suspects in a case that is compared to those collected at the scene of the crime. But what happens when the sample is an incomplete match, compromised, or contaminated? The answer is the wrongful conviction of innocent citizens. The case that I have decided to highlight, is the wrongful conviction of Herman Atkins. In 1986, Atkins was convicted of two counts of forcible rape, two counts of oral copulation, and robbery in the state of California. It was alleged that Herman entered a shoe store, and raped, beat, and robbed a
... any of the DNA provided by the Vaninced victim support one report showed a piece of genetic material the penis of Steven branch but could not be linked to any victim.The penis of Steven branch that could not be linked to any victim or any defendant in the meantime our investigators were obtain DNA samples in the air cigarette butts world swabs from people who had some connection to the events is included samples from several people including Steven branches stepfather Terry Hobbs.The result of that analysis in May 2007 show that rope used to tie up Michael Moore could be associated with very hot provided a result the prosecution right after learning of it much more recent analysis by Mr. Fedora show that hair found on a tree root through Tree Stump at the crime scene could be associated with the DNA samples provided by Terry Hobbs.
Nowadays, DNA is a crucial component of a crime scene investigation, used to both to identify perpetrators from crime scenes and to determine a suspect’s guilt or innocence (Butler, 2005). The method of constructing a distinctive “fingerprint” from an individual’s DNA was first described by Alec Jeffreys in 1985. He discovered regions of repetitions of nucleotides inherent in DNA strands that differed from person to person (now known as variable number of tandem repeats, or VNTRs), and developed a technique to adjust the length variation into a definitive identity marker (Butler, 2005). Since then, DNA fingerprinting has been refined to be an indispensible source of evidence, expanded into multiple methods befitting different types of DNA samples. One of the more controversial practices of DNA forensics is familial DNA searching, which takes partial, rather than exact, matches between crime scene DNA and DNA stored in a public database as possible leads for further examination and information about the suspect. Using familial DNA searching for investigative purposes is a reliable and advantageous method to convict criminals.
Contextual information also affects the human comparative part of fingerprint analysis, in ways that alter the matching of the same fingerprints, years apart; however, when contextual information is provided, it actually helps 20% of forensic technicians, but that still leaves 80% hindered by contextual information (Dror et al, 2006). Contextual information affects the psychological aspects of perception and problem-solving, in a way that can obscure information that does not support the context, and it can even affect how forensic technician’s view and handle forensic evidence (Bernstein et al, 2013). However, there are some advantages of contextual information, because it can give the forensic division a mental shortcut, saving time and money; however, these shortcuts lead to inaccurate and biased conclusions. This essay has shown that contextual information creates erroneous mistakes and prejudiced results in forensic investigations. A possible way to remove the negative effects of contextual information is to have the forensic technicians, not know the context of the crime so that they do not
The murder case that has been shown on the T.V. shows “America’s Most Wanted and “Cold Case” was reopened, but DNA technology fields no leads. Police exhumed the body from a potter’s field, but the decades old case remains wide open.
Since the early settlers first stepped foot on what is now the United States of America, capital punishment has been reserved as a form of punishment for the people who have committed some of society’s most heinous crimes. Recently, support of capital punishment has begun to erode due to the advancements of DNA technology and groups, such as the Innocence Project. Capital punishment, however, remains to be an appropriate form of punishment for someone convicted of capital crimes, and may be effective in deterring such offenses.
I personally feel that this is a much more reliable and accurate than relying on the testimony of witnesses. I believe through the use of science we as a society can now make sure that the guilty are caught and punished while the innocent are protected from wrongful prosecution. However the eyewitness should not be completely left out of the case against the possible offender. After it is determined through scientific evidence, in this case DNA, that the physically involved in the crime then witnesses can be brought in to give testimony that the offender was present at the crime scene or the victim can be sure that the accused was truly the one involved in the actual crime.
According to the Innocence Project (2006), “On September 17, 2001, Chad wrote the Innocence Project in New York, which, in 2003, enlisted pro bono counsel from Holland & Knight to file a motion for DNA testing on Tina’s fingernail scrapings.” The state had tested the DNA that was under Tina’s nail from the first case but at that time it was inadequate and could not be tested. It was not until now that we have the technology capable enough to test it. In June 2004, the test came back negative to matching both Jeremey and Chain Heins but did come from an unknown male. The state argued that it was not enough to overturn the conviction so Chad’s attorney asked the state to do some further testing and to compare the DNA from under the fingernails to the hairs that was found on Tina’s body. It was in 2005 that the Florida Department of Law Enforcement confirmed that there was a match between the DNA under Tina’s nail and the pubic hair. According to LaForgia (2006), “this particular type of DNA, the report stated, was found in only about 8 percent of Caucasian American men.” During this process there was a new piece of evidence that Chad’s attorney had learned about during the appeals process, a fingerprint. There were some accusations that the prosecutors never disclosed this information about this third fingerprint and if they did it was too late. The jurors did not even know about this fingerprint and if they did this could have changed the whole case. This fingerprint was found on several objects that included the smoke detector, a piece of glass, and the bathroom sink. It was soon discovered that this fingerprint matched with the DNA found on the bedsheets that Tina was on. This was finally enough evidence to help Chad Heins become exonerated in
The three different main types of fingerprints are Loops, Arches, and Whorls (Jackson 1). Henry Faulds is known as the Father of Fingerprints and developing fingerprints (Jackson 1). His discovery of fingerprints has made a huge impact not only in his time but, in Modern Crime Scene Investigation (Jackson 1). Without fingerprinting, it would be very difficult to convict criminals of crimes and very hard to try to process information. Crime Scene Investigators make a huge impact in Forensic Science. We need CSI workers, without them people could only imagine what crime would be like not only in our community, but in our
This case started on July 25, 1984, with the death of a nine year old girl by the name of Dawn Hamilton. The story plays out as follows: Dawn approached two boys and an adult male that were fishing at a pond in a wooded area near Golden Ring Mall in eastern Baltimore, Maryland. Dawn asked the boys to help her find her cousin, they declined the adult male however agreed to help her look. This was the last time anyone saw Hamilton alive. Hamilton’s body was found to have been raped, strangled and beaten with a rock. The police collected a boot print at the scene and DNA that was found in Hamilton’s underwear. The police also relied on the witness testimonies and line-ups, which in this case was the photo array. With the five eye witness testimonies and a tip the believed to be suspect was found. Kirk Noble Bloodsworth a prior U.S. Marine with no prior criminal record was taken into custody and charged with intentional first degree murder, sexual assault and rape. Bloodsworth was basically convicted on the eye witness testimonies. The state requested the death penalty. Bloodsworth was sentenced to two consecutive life terms. (BLOODSWORTH v. STATE, 1988)
Singer, Julie A. "The Impact Of Dna And Other Technology On The Criminal Justice System: Improvements And Complications."Albany Law Journal Of Science & Technology 17.(2007): 87. LexisNexis Academic: Law Reviews. Web. 10 Mar. 2014.
Fingerprints have been known to be one of the oldest and, perhaps, most important types of evidence that can be found used for human identification in criminal investigations. The process for comparing and identifying fingerprints is a long and difficult task that requires multiple individuals with years of training and experience. Understanding the exact definition of fingerprints and how fingerprint evidence is used in criminal investigations is important for anyone who is interested in anything related to criminal justice and criminal law.
This case is on Gary Ridgway who went on a twenty year killing spree. “The man whom cops would call the Green River Killer was to murder at least 49 women. Some investigators think he killed as many as 90, which, if true, would make him the biggest serial murderer in U.S. history. At his peak in '83, he was murdering as many as five women a month” (Mcarthy, 2002). This case happened throughout the eighties but he wasn’t caught until 2001 because of new technology with DNA testing which connected him to them in which he then admitted to the rest of the murders. This man was charged with forty-eight murders in which turned into forty-eight consecutive life sentences without the chance of parole. He agreed to show them where all the bodies were
In England in 1888, Sir Francis Galton developed fingerprint classification so that fingerprints could be retrieved in a decent amount of time (Human Fingerprints). He then established four basic fingerprint patterns which are the arch, the loop, the whorls, and the composites. In an arch, the ridge runs all the way from one side of the finger to another without any twisting or curving. In a loop fingerprint, the ridges make a backward turn, however they do not twist. In whorls, there are two or more deltas (deltas are triangular-shaped patterns where different fingerprint ridges meet). Lastly, composites are a variation of the above three patterns.
From Lydia’s case, we can see the science such as DNA testing can prove the true in a court, and it is enough to be evidence which would let people die.