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You turn on the news to see that another crime had been solved that day. But how did they do it? It was the work of forensics and fingerprinting. Forensics and fingerprinting is used to solve crimes that would otherwise be impossible. Everyone's fingerprint is slightly different then the next guy, and every other guy and girl. Since you leave your fingerprints on everything, they can take your fingerprints and use them to find who committed the crime. They can also do a lot with DNA. Using forensics they can solve crimes with the dna left at the crime scene. Forensics and Fingerprinting had a significant impact on America by making it impossible to commit a crime and be unnoticed, solving cases that have been left for years and proving suspects innocent.
Forensics is a way to catch criminals using DNA that is found in things such as hair and fingerprints and matching it with the person who committed the crime. When the term fingerprinting is used it doesn't necessarily mean
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That is due to the work of forensics. There is a whole non profit organization called the Innocence Project that works to free innocents from prison. Around 300 people have been freed by forensics and 20 served time on death's row. Even though it is great that this can happen it isn’t a good thing it's happening in the first place. There are also a lot of problems with proving people innocent. Someone that committed the crime or was being accused of the crime could place false evidence at the scene to try to pin them as guilty. The prosecutor's, someone who is trying to prove them guilty, may know some information that could prove them innocent but hold it back to pin them as guilty. The police may also torture or intimidate someone they think is guilty to pleading guilty when they are innocent. False information could be given out about the case or they could just be fed up with the case and call them
The pattern that the blood gives off gives forensic scientists the tools that they need to help solve cases. Investigators can find clues to a murder in a number of different ways. Typically they find out how many times someone has been stabbed or how many blows they received. Through the count of the times the action had been performed, they can come to an understanding of whatever hand the suspect was using. Other information can tell how the suspect was standing over their victim during the time of death.
When it comes to identical twins we have come to learn that twin identical or not will not have the same fingerprint. Fingerprints are unique and are made to identify a person. So even when you clone humans or other primates I believe that the Friction ridge pattern will be similar but not exactly the same. I believe that in the process of the cloning process something will cause the fingerprints to come out different. Because cloning is dangerous there has yet to be a human cloning, but there have been cloning of monkeys and according to the data even though the monkey was cloned the fingerprint still isn’t the same.
DNA is the blueprint of life. It stores our genetic information which is what is in charge of how our physical appearance will look like. 99.9% of human DNA is the same in every person yet the remaining .1% is what distinguishes each person (Noble Prize). This small percentage is enough to make each person different and it makes identifying people a lot easier when its necessary. DNA not only serves to test relationships between people it also helps in criminal cases. DNA testing in criminal cases has not been around for many years if fact it was not until the early 1990s when the use of DNA testing for criminal cases was approved and made available. By comparing the DNA of a suspect and that found in the crime scene a person can either be convicted of a crime or they can be exonerated. This method of testing gained more publicity in the 1984 case of Kirk Noble Bloodsworth a man who had been convicted of the rape and first degree murder of a nine year old girl in Maryland. His case was a milestone in the criminal justice system since it involved the use of new technology and it also raised the question of how many people had been wrongly incarcerated for a crime they did not commit.
Fingerprints are collected from the evidence, and ran through a database such as IAFIS. DNA evidence that is extracted from hair, bodily fluids and skin cells are also ran through databases that help identify the suspects. Firearms, bullets and cartridges are analyzed and can be used to trace a weapon back to its owner. All of the information gathered from collected evidence is pooled together to create a solid base for use in the conviction of suspects in a crime.
Another discrepancy between actual forensics and how it is portrayed in the media is the availability of information in databases. There is only a small percentage of the entire population’s fingerprints or DNA samples stored within databases such as the Integrated Automated Fingerprint Identification System (IAFIS). This makes finding a match between a DNA sample or fingerprint difficult, as a match would only be found if the person’s information was already stored within the database. If there is no match previously stored in a database, the fingerprint or DNA sample could be potentially rendered useless within a trial. Typically, in order to perform an analysis, investigators must already have a suspect in mind and request a DNA or fingerprint sample from him or her. If the suspect does not want to provide one however, the sample collected as evidence may not count as valid. The CSI effect creates an idealized image that all crimes can be solved with a hair or drop of blood, but this is not always the case in real life.
The easiest way to figure out who was at the crime scene is by taking fingerprints. Good impressions such as fingerprints can be the most valuable pieces of evidence in a forensic investigation. Impressions help link a person to a crime scene or crime as well can provide information on any weapon that could've been used at the scene. An educated technician would compare and search fingerprints manually and on AFIS computer system for classification, comparison and identification. "Analyzing evidence is not a quick or simple process.
There are many different reasons associated with the fact that there are still innocents being convicted with crimes they did not commit. At Northwestern Law School, in 2001, the Center of Wrongful Convictions studied the individual cases of 86 death row exonerees. Five top components were included: eyewitness error, where people have a faulty memory or are confused by the incident. Government misconduct, exemplified by the justice system(both police and the prosecution). Junk science, evidence being mishandled or studied by those who are unqualified in a trade where precision is of the utmost importance. A snitch testimony which is a trick and is normally given to those believing it is a reduction in their sentence. A false confession prompted by a mental illness or of those being clinically retarded, also stemming from police torture. Hearsay and circumstantial evidence also top the list as well.(2) When the irreversible sanc...
DNA in forensic science has been around for a long time. DNA has had help in solving almost every crime committed. There have been a lot of crimes where people are raped or murdered and the person who did it runs free. Scientists can collect the littlest item they see at the scene, such as a cigarette butt or coffee cup and check it for DNA. People have spent years in jail for a crime they didn’t commit till DNA testing came into effect. People are getting out of jail after 20 years for a crime they didn’t commit, cause of the DNA testing. DNA has helped medical researchers develop vaccines for disease causing microbe. DNA has become a standard tool of forensics in many murders and rapes.
The criminal justice system has changed a lot since the good old days of the Wild West when pretty much anything was legal. Criminals were dealt with in any fashion the law enforcement saw fit. The science of catching criminals has evolved since these days. We are better at catching criminals than ever and we owe this advancement to forensic science. The development of forensic science has given us the important techniques of fingerprinting and DNA analysis. We can use these techniques to catch criminals, prove people's innocence, and keep track of inmates after they have been paroled. There are many different ways of solving crimes using forensic evidence. One of these ways is using blood spatter analysis; this is where the distribution and pattern of bloodstains is studied to find the nature of the event that caused the blood spatter. Many things go into the determination of the cause including: the effects of various types of physical forces on blood, the interaction between blood and the surfaces on which it falls, the location of the person shedding the blood, the location and actions of the assailant, and the movement of them both during the incident. Another common type of forensic evidence is trace evidence. This is commonly recovered from any number of items at a crime scene. These items can include carpet fibers, clothing fibers, or hair found in or around the crime scene. Hairs recovered from crime scenes can be used as an important source of DNA. Examination of material recovered from a victim's or suspect's clothing can allow association to be made between the victim and other people, places, or things involved in the investigation. DNA analysis is the most important part of forensic science. DNA evidence can come in many forms at the crime scene. Some of these forms include hair; bodily fluids recovered at the crime scene or on the victim's body, skin under the victim's fingernails, blood, and many others. This DNA can be the basis of someone's guilt or innocence; it has decided many cases in the twentieth century. As the times continue to change and the criminals get smarter we will always need to find new ways to catch them. Forensic science is the most advanced method yet, but is only the beginning. As the field of science grows so will the abilities of the
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
It has been demonstrated the one in seven people, or fourteen percent, who are put on death row were innocent of their convicted crimes. The American society is outraged when an innocent person is killed, the fourteen percent would not have to suffer if the death penalty was illegal throughout the country. There is no way to tell how the more one thousand people, possibly more, executed since 1976 may also have been innocent, courts do not generally entertain claims of innocence when the defendant is dead. Wrongful convictions and executions can be made from many of the following factors: mistaken eyewitness testimony, faulty forensic science, fabricated testimony or testimony from jailhouse informants, grossly incompetent lawyers, false confessions, police or prosecutorial misconduct and racial bias. Many of the people who are resentenced from death to life imprisonment may be innocent and rotting behind bars, since without the imminent threat of death, no one will take up their case to exonerate them. Along with the con of the death of innocent people, the elimination of the death penalty proves as a more effective way to deter
Forensic evidence can provide just outcomes in criminal matters. However, it is not yet an exact science as it can be flawed. It can be misrepresented through the reliability of the evidence, through nonstandard guidelines, and through public perception. Forensic science can be dangerously faulty without focus on the ‘science’ aspect. It can at times be just matching patterns based on an individual’s interpretations. This can lead to a miscarriage of justice and forever alter a person’s life due to a perceived “grey area” (Merritt C, 2010) resulting in a loss of confidence in the reliability of forensic evidence.
Crime investigators have the job to solve crime and find the suspect responsible. Sometimes the offense is very difficult to solve, but with the right pieces of evidence and tools, the investigation can be answered a little more easily. The use of fingerprints is a main tool used at crime scenes. Investigators find these at the actual crime scene and analyze them at the lab to determine whom the prints belong to. Each person has an individual print which is why this is a very useful piece of evidence. Sir Francis Galton found that the prints could be categorized into different types as well as different groups. The research of fingerprints from decades before has shaped the way detectives identify suspects and victims.
As far back as 1832, James Marsh was the first to use forensics at trial to give evidence as a chemist in 1832. Since that time forensic science and evidence has come a long way in various ways and technology to help in determine if the suspect is guilt or not, through such things as DNA testing, blood, and fingerprints. The first forensic police crime lab was created in 1910. The contributions of Dr. Edmond Locard, a French scientist and criminologist, proposed that “everything leaves a trace”. This principle is still valid today as it was so many years ago. No matter how small, the specialized trained technicians and investigators can take these methods and go to a crime scene to get evidence. “Forensic science is the application of sciences such as physics, chemistry, biology, computer science and engineering to matters of law.” (Office of Justice, 2017) These different sciences can help achieve and assist in solving a case. Forensic science has also the ability to prove that a crime was committed, it can find the elements of the crime, it can help place the suspect at the scene and whether the suspect had any contact with the victim. However, in the last several years the techniques and with the use of technology the evidence that forensic science uncovers can also exonerate an innocent individual who has been falsely accused of the
According to the American academy of forensic science, the forensic sciences form a vital part if the entire justice and regulatory system. Forensic science is an enticing career having to do with science and criminal justice, a large variety of schooling is needed to start this job Despite the fact that it can be a dangerous environment it can be an exciting profession to pursue. There are many different fields in forensic science that you can study or major in but they all have the same objectives.