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Dna in criminal investigations research paper
Use of DNA in criminal investigations
Dna in criminal investigations research paper
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LAWS378 – Essay 1
1 – a:
A Suspect Compulsion Order is an order from the court that legally requires the subject to provide a DNA sample. The Criminal Investigations (Bodily Samples) Act 1995 s16 provides authority for the court to issue such an order. If it is granted, Mr Toki will be required to provide a DNA sample to the police for the purposes of matching his DNA to that found at the crime scene in April 2015. If the DNA evidence matches it can be introduced in court as proof of his presence at the crime scene.
1 – b:
The police are required to apply for a suspect compulsion order as the profile that currently exists in the databank is not able to be used as evidence in court. This is provided for by s71 of the Act which effectively states that profiles from the databank cannot be introduced as evidence the accused provided the crime scene DNA. A fresh DNA sample must be taken so that it can be matched to the crime
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However, the concept of excluding reliable evidence for reasons unrelated to the guilt of the accused is fundamentally flawed; disregarding the pursuit of truth and justice in the pursuit of principles far less honourable. The ‘misguided sentimentality’ of excluding illegally obtained evidence “regards the zealous officer of the law as a greater danger to the community than the unpunished [criminal]” . By failing to admit the databank profile of Mr Toki, society is adopting the illogical concept that we must burden the errant conduct of law officers by deliberately disregarding the guilt of the accused. This is a policy argument that is supported by the comments in Hansard “I firmly believe that the rights of the community and the rights of the country must come first.” In pursuit of the goal of protecting the community it is important to “increase the database’s size by adding more identified DNA profiles. This bill will facilitate the growth of the database and the resolution of unsolved
Mr. Cockburn concluded that the evidence presented in this case was misinterpret and misapprehend, the leading investigation was “unscientific and slipshod” which lead to the sentence of Edward splatt. Many questions were raised, whether police officers should collect trace elements from the crime scene? The involvemet of police officers collecting samples rather than scientific experts which could lead to wrong and misleading evidence? The scientific procedure undertaking in this investigation. And these collected samples collected from officers and tested would lead to unvaluable piece of evidence.After Edward splatt conviction, anattorney- general by the name of Mr Griffin keeped a close eye on the case and examined the moran report and
Office of the Inspector General. (2010). Review of the Federal Bureau of Investigation Laboratory’s Forensic DNA Case Backlog. U.S. Department of Justice.
Wrongful conviction is an issue that has plagued the Canadian Justice System since it came to be. It is an issue that is hard to sort out between horrific crimes and society’s desire to find truth and justice. Incidences of wrongful conviction hit close to home right here in Saskatchewan as well as across the entire nation. Experts claim “each miscarriage of justice, however, deals a blow to society’s confidence in the legal justice system” (Schmalleger, Volk, 2014, 131). Professionals in the criminal justice field such as police, forensic analyst, and prosecutors must all be held accountable for their implications in wrongful convictions. There are several reasons for wrongful convictions such as racial bias, false confessions, jailhouse informants, eyewitness error, erroneous forensic science, inappropriate, professional and institutional misconduct and scientific limitations that society possessed prior to the technological revolution (Roberts, Grossman, 2012, 253 – 259). The introduction of more advanced DNA analysis has been able to clear names and prevent these incidences from occurring as often. As well as the formation of foundations such as The Association of Defense for the Wrongly Convicted (AIDWYC). Unfortunately, mistakes made in the Canadian Justice System have serious life altering repercussions for everyone that is involved. Both systematic and personal issues arise that require deeper and more intense analysis.
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.
Well written procedures, rules, and regulation provide the cornerstone for effectively implementing policies within the criminal justice system. During the investigational process, evidence collected is subjected to policies such as Search and Seizure, yet, scrutinized by the Exclusionary Rule prior to the judicial proceeding. Concurrent with criminal justice theories, evidence collected must be constitutionally protected, obtained in a legal and authorized nature, and without violations of Due Process. Although crime and criminal activities occur, applicability of policies is to ensure accountability for deviant behaviors and to correct potentially escalation within social communities It is essential the government address such deviant behavior, however, equally important is the protection of the accused which also must become a priority when investigating criminal cases.
At approximately 3:01 p.m., I Detective L. Donegain made contact with John Miles in Jail Pod BB 232l. I read the Search Warrant to Miles. I then collected his DNA at approximately 3:05 p.m., after collecting his DNA he was given a copy of the Search Warrant and turned back over to the Jail.
I believe the physical evidence was adequately presented given Michael Mosley’s conviction. I also believe that an expanded DNA database could lead law enforcement to criminals i...
The evidence offered during the trials should fully reflect the circumstances in which they were confessed. The aim of any interrogation is to ensure that a fair environment for the acquisition of the evidence is provided so that the defendants are aware of the possible consequences of the confessions they make before the investigating personnel. The case has offered insights into the legal practices and the criminal justice system with the stakeholders agreeing that there should be no deliberate creation of the environments that allow blatant errors which lead convictions (Kamisar, 2012). A system that withholds information on warnings to the defendants is defective and hence should be entertained in the modern legal
Majority of cases have made mistakes and convicted the wrong people due to the wrong information due to the forensic science which LaPorte mentioned in the article “Wrongful Convictions and DNA Exonerations: Understanding the Role of,” that “One of the greatest tragedies in the criminal justice system is when a person is convicted for a crime he/she did not commit.” It has been multiple times that mistakes were made yet today there is still problems occurring. No one will ever be perfect but their results need to be around 90% to make sure they have enough information to make the arrest and to send to person away for life. In order to prevent his, there needs to be more test, people who can be tested with this sensitive information. There
DNA profiles can be used to identify individuals, allowing evidence to be used both as a means of convicting the guilty and as a means of exonerating the innocent. People can leave traces of their DNA at a crime scene because it is inside every cell of their body. DNA can be extracted from blood, semen, saliva or hair roots left at a crime scene using a chemical process. Tiny amounts of DNA can be extracted from a single cell – such as cells shed from someone’s skin when they touch an object. Police can also collect biological samples from suspects, usually by scraping some cells from inside their cheek. If the DNA profile from an individual matches the DNA profile from a crime scene it is therefore highly likely that the blood, semen or saliva left at the crime scene came from them. Also, in a paternity test, the mother’s DNA profile is compared with the child’s to find which half was passed on by the mother. The other half of the child’s DNA is then compared with the alleged father’s DNA profile. If they don’t match, the ‘father’ is excluded, which means he isn’t the father of that child. If the DNA profiles match, the ‘father’ is not excluded - which means there is a high probability that he is the father. In both of these cases, the DNA profile is much like a “genetic fingerprint”, and if there are records kept such as birth certificates and social security numbers, then DNA profiles make just as much sense to keep.
“The rapid implementation and continuing expansion of forensic DNA databases around the world has been supported by claims about their effectiveness in criminal investigations and challenged by assertions of the resulting intrusiveness into individual privacy” (p545).
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.
Forensic science has now been recognized as an important part of the law enforcement team to help solve crimes and cold cases. The advances in technology are being used each day and we must continue to strive to develop better advances in this field. The recent discovery of using DNA in criminal cases has helped not only positively identify the suspect, but it has helped exonerate hundreds of innocent individuals. “With new advances in police technology and computer science, crime scene investigation and forensic science will only become more precise as we head into the future.” (Roufa, 2017) Forensic science and evidence helps law enforcement officials solve crimes through the collection, preservation and analysis of evidence. By having a mobile crime laboratory, the scene gets processed quicker and more efficiently. Forensic science will only grow in the future to be a benefit for the criminal justice
The state of New York announced on August 5 that it intends to collect DNA samples from every person in prison, on parole, or in probation in that state for one of a specified list of crimes. Included on this list are murder, sex crimes, drug dealing, and some drug offenses. The samples will be digitized and placed on state computers. Once this database has been establish, police will be able to search it in order to find a match with evidence found at crime scene.
The process of gathering evidence largely depends on the role of discretion by the police. Once police have decided to pursue a reported crime, they then begin the process of gathering evidence. To ensure that the process of gathering evidence is lawful, the police must follow the procedure outlined in the Evidence Act 1995 (NSW), which describes the manner in which evidence can be collected. This act imposes certain limits on the way police can gather evidence and the types of evidence that can be used. The Act is able to protect the rights of citizens by making it a requirement for the police to gain necessary legal documentation, such as search warrants, in order to obtain some types of evidence and thus, protects the rights of ordinary systems. In more recent times, the use of technology has come to play a major role in the gathering of evidence and with this comes complications in the law. New technologies in relation to the criminal investigation process are mainly in reference to DNA evidence, genetic material that can place a suspect at the scene of a crime. The introduction of DNA evidence into the criminal investigation process has been extremely effective in achieving justice, as it is able to secure convictions. Initially, there were some setbacks to the use of DNA evidence