The Influence Of DNA Evidence

In McClure, Weisburd and Wilson (2008) summary article arguing that in addition to bench science, field experimentation involving forensic methods is key to assess the utility of various methods to solve crimes. The study reflected that there is a need for more research into many aspects of forensic science, criticizing the strength of scientific evidence that’s collected at a crime scene and interpretations of most forensic methods while omitting DNA testing. McClure et al’s (2008) explains that in sexual cases and homicides, the presence of DNA evidence actually increased the likelihood of prosecution and a conviction. According to the article “…the case of convictions, the odds-ratio for the presence of DNA evidence was 33.1 for sexual offenses and 23.1 for homicides” (McClure et al., 2008). Subsequently, the research shows that there was a consistent gradual decline in the national homicide rates that began in the 1900s and continued through into the 21st century. The decline of homicides in the US has dropped by from more than 90% in the 1960s to 62% in 2003. Even though this significant drop has occurred during the introduction of the new DNA testing

DNA exonerations are very common. So much so that in the United States alone, there have been “317 post-conviction DNA exonerations” (2014). The very first DNA exoneration dated back to 1989. The Innocence Project examined these DNA exonerations and found that “8 of the 317 people exonerated through DNA served time on death row. Another 16 were charged with capital crimes but not sentenced to death” (2014). More so, the average time served was about 13.5 years, and the average age was 27 (2014). This means that before the age of

Well, in nearly 25 years since post-conviction DNA evidence has been used to demonstrate criminal innocence, even in cases that landed defendants on death row or in prison for life. Eyewitness misidentification, forensic science errors, false confessions, government misconduct and bad lawyering are many of the reasons wrongful convictions occur. Eyewitness being the most common. Sometimes it can be done by error and other times it is actually done intentionally. In seventy-seven percent of the DNA exonerations, eyewitness misidentification led to wrongful convictions (The Innocence Project- How wrongful conviction happen).

DNA testing is a critical and accurate tool in linking accused and even convicted criminals for crimes, and should be widely used to assess guilt or innocence before jail sentences are imposed. It was started up by scientists Francis C. Crick and James D, Watson in 1953 as they had described the uses, structures and purpose of the DNA “deoxyribonucleic acid” genetic fingerprint that contains organism information about an individual (testing

Today in the crime world, DNA evidence is strongly accepted in solving crime cases. This is all based in part by allowing a crime laboratory to have a designated unit whose main goal is to analyze DNA evidence to aid investigators with positive outcomes in crime case solving. With that being said we are going to discuss the functions of a DNA unit within a crime lab as well as address the vital role these units play in solving crime.

Due to the uniqueness of DNA it has become a powerful tool in criminal investigations

DNA forensics can also narrow down suspect pools, exonerate innocent suspects, and link crimes together if the same DNA is found at both scenes. However, without existing suspects, a DNA profile cannot direct an investigation because current knowledge of genotype-phenotype relation is too vague for DNA phenotyping. For example, a profile from a first time offender that has no match in any database may give the information that the criminal is a left handed male of medium stature with red hair and freckles. It would be impossible to interview every man who fits that description. However, with available suspects, DNA forensics has many advantages over other forms of evidence. One is the longevity of DNA. Although it will deteriorate if exposed to sunlight, it can remain intact for centuries under proper conditions (Sachs, 2004). Because DNA is so durable, investigators can reopen old cases to reexamine evidence.

With the number of DNA exonerations growing in the recent years, wrongful convictions reveal disturbing trends and fissures in the justice system. It shows how broken the system is, and why it needs urgent fixing. According to Huff (1996), over ten thousand people are convicted wrongfully for serious crimes each year. This study established that factors leading to wrongful convictions are false eyewitnesses, a prejudiced jury, incompetent prosecutors, and suspects’ ignorance. Where DNA evidence clears a suspect, array of reasons emerge; misconduct, mistakes, to race and class factors. It is important to make DNA data available to attorneys in order to enable them mount a strong

This Organisation is a non-profit Legal organisation dedicated to exonerating wrongfully convicted people through DNA testing and reforming the criminal justice system to prevent future injustices. The Innocence Project was established in a landmark study by the United States Department of Justice and the United States Senate in conjunction with the Benjamin N.Cardozo School of Law, which found that incorrect identification by eyewitnesses was a

Every time an innocent person is exonerated based on DNA testing, law enforcement agencies look at what caused the wrongful convictions. There are many issues that contribute to putting guiltless lives behind bars including: eyewitness misidentification, false confessions, imperfect forensic science, and more (Gould and Leo 18). When a witness is taken into a police station to identify a suspect, it is easy for their memories to be blurred and their judgment influenced. This can lead the witness to identify a suspect who is actually innocent. Flawed forensic science practice also contributes to wrongful imprisonments. In the past, analysts have been inaccurate due to carelessness, testified in court presenting evidence that was not based

There have been many incidents where cases have needed a solid prosecution in order to convict the defendant in a murder or rape case. This is where DNA Testing comes in to help. By taking a DNA test, a person can be found guilty or not guilty. If a person claims they have been raped there can be a sperm sample taken from the suspect in order to prove that he is guilty or not. In addition, in a murder case there can be blood taken from the suspect so they can tell of his innocence. There are several ways to determine whether a person is guilty or not by this method. Many cases have begun to use this method saying that it is foolproof. People say this is the method of the future of crime

DNA evidence is extremely helpful in criminal trials not only because it can determine the guilt of a suspect, but also because it can keep innocent people from going to jail. The suspect must leave a sample of their DNA at the crime scene in order for testing to occur, but DNA can be found in the form of many things such as semen, blood, hair, saliva, or skin scrapings. According to Newsweek, "thousands of people have been convicted by DNA's nearly miraculous ability to search out suspects across space and time… hundreds of innocent people have also been freed, often after years behind bars, sometimes just short of the death chamber" (Adler ). Though some may think it is a waste of time to go

The Innocence Project was established in the wake of a landmark study by the United States Department of Justice and the United States Senate with help from the Benjamin N. Cardozo School of Law (Schneider, 2013). This study found that there were numerous reasons why people are wrongfully convicted including, but not limited to eye witness identification, perjured testimony, improper forensic science techniques, and government misconduct (Roberts & Weathered, 2009) The original Innocence Project was founded twenty two (22) years ago as a part of the Cardoza School of Law of Yeshiva University in New York City, New York (Davis, 2012). The Innocence Projects primary goal is to exonerate those whom have been convicted of a crime when there is DNA evidence available to be tested or re-tested (Mitchell, 2011). DNA testing has been possible in five (5) percent to ten (10) percent of cases since 1992 (Risinger, 2007). On the other side, other members of the Innocence Project help to exonerate those have been convicted of a crime where there is no DNA evidence to test. A goal of the Innocence Project is to conduct research on the reasons for wrongful convictions, how to fix the criminal justice system, as well as advocate for those who have been wrongfully convicted (Steiker & Steiker, 2005). The members of this organization strive to teach the world about the dangers of wrongful convictions. To date, this non-profit legal organization, has freed three hundred eighteen (318)

Another report from Turman, herarticle about the importance of DNA evidence to say in a strong and definite way that the offenders or to prove prisoner in criminal cases has arose in the media with the developing regularity over the last few years. Criminal justice professionals and the public behold that the forensic DNA technology is reforming

There are often mistakes made that falsely determine an individual’s sentence. Sloppy police work and loss of documents are examples of careless errors. There is also some room for error with determining the results of a DNA sample that do not fall under the human error category. Many times there may not be ample DNA samples at a crime scene. Only a fraction of crimes reveal DNA. Drive-by shootings and bombings often do not provide DNA for investigation purposes. “There is a public perception that DNA is the cure-all for these kinds of mistakes. DNA is not the whole answer.” (Dieter, Richard) Eye witnesses cannot solely and accurately determine a person’s fate 100 percent of the time. There are numerous amounts of cases in which those found guilty were indeed later found innocent. Many times, these individuals have already served time in jail. Many argue that the time inmates spend in