Dna Evidence Essays Examples

438+ documents containing “dna evidence”.


Sort By:

Reset Filters

Program Budget AssignmentDNA in confirming, identifying, and exonerating burglary investigations of crime suspects is common in many police departments. This helps them investigate crimes, although traditionally, it has been used in the most severe cases because of limited resources. It has been reported that DNA has improved the clearance rates for such serious crimes. They are most preferable for sex offenders who always leave behind biological evidence. The DNA effectiveness in such cases has improved the efforts to expand the evidence resulting from DNA in such cases, hence processing other types of crimes, such as those involving burglary. In this program budget assignment, I am seeking a $ 50,000 grant to improve the process of DNA evidence that has been collected. This will also involve examination of the evidence according to the criminal investigations in my local police department. The funding will help process the thirty DNA samples so that….

, 2007, p. 153).
Conclusion

The research showed that DNA evidence can be a valuable tool for the criminal justice system, but the effectiveness of such evidence depends on a number of factors. Among the more salient of these factors was the need to ensure that the DNA sample is collected and stored properly, and that it is transported to a testing facility in a timely and appropriate fashion. Other issues that emerged from the research included the need to maintain a strict chain of custody for all DNA evidence, as well as the need to ensure that the results of DNA testing were interpreted in an informed manner. Finally, the research was consistent in emphasizing that although DNA evidence can help prove innocence and guilt, the accuracy of such evidence depends on the type of DNA testing protocol that is involved and how these results are used in the courtroom.

eferences

Black's law….

DNA Which to Some of
PAGES 3 WORDS 1164

In 1866, Mendel discovered that there are "recessive" and "dominant" traits in plants, paving the way for understanding how genes work in predictable ways, and plowing the ground for later science, although his work wasn't "discovered" until 1900. In 1944, three scientists at the Rockefeller Institute in New York discovered that DNA is the carrier of the genetic information within the body.
In the early 1950s, scientists were by now aware that DNA was genetic material and that is was an acid made up of sugars, phosphate groups, and "equally matches bases," the Dolan center points out. That was all well and good, but the big question remained: HAT AS NATURE'S GENETIC CODE?

The man most responsible for "breaking the genetic code" was MARSHALL NIRENBERG in 1961; but "breaking it" (or identifying it) was only part of the puzzle. And then in 1965, NIRENBERG (working at the National Institutes of Health….

DNA Techniques
PAGES 2 WORDS 445

Filtration-Based DNA Preparation for Sexual
Assault Cases. Journal of Forensic Science 9/2003 Vol.48, No.

The precision of DNA technology allows law enforcement authorities to definitively identify perpetrators of sexual assaults from microscopic amounts of their

DNA collected from victims using a cotton swab. It has enabled the FBI to establish the Combined DNA Index System ("CODIS"), a nationwide DNA data bank and identification system modeled in principle, after the AFIS automatic fingerprint identification system.

It is estimated that crucial DNA evidence collected in approximately half a million unsolved rape cases awaits scientific processing, partly because of the complexity and time consuming nature of technical aspects of the techniques involved. The U.S. House of Representatives has already passed legislation in the form of the DNA Sexual Assault Justice Act that would allocate a quarter of a billion dollars to the problem. The Senate is expected to do likewise.

Chief among the difficulties concerns the separation….

DNA Cold Case
Using DNA to Solve Cold Cases

Our federal, state and local law enforcement agencies are charged with the responsibility of bringing justice to every case that comes before them. Especially in the case of homicide, the importance of finding resolution through identification and prosecution (where possible) of perpetrators, is a top priority. This is true even as a considerable amount of time lapses since the emergence of a given case. hen an investigation reaches an impasse, exhausts its leads and ultimately finds itself without a trail to follow, it becomes a cold case. Cold cases typically find their way to the backburner as law enforcement agencies focus on solving crimes with more immediately available evidence. It is thus that cases go 'cold,' leaving investigators with no apparent directions to turn for resolution.

However, today, with the emergence and continued refinement in use of DNA evidence, many cold cases are receiving….

"The criterion for the admissibility of a confession has thus evolved into the quality of voluntariness. The aim of admitting into evidence only voluntary confessions is to prevent the introduction of unreliable evidence. & #8230; the result is that judges may exclude confessions where the coercion is blatant and obvious but not exclude confessions where the coercion" is more subtle -- the jury is left to decide the confession's veracity in this case (akefield & Underwager 20009).
Question 13

Discuss and provide examples pertaining to the waiver of privilege against self-incrimination.

The protection against self-incrimination does not apply to "non-testimonial evidence" such as giving examples of one's voice, police line-ups, blood samples or fingerprints (Lesson 12, 2009, Slide 4)

Question 14

The principal restriction of impeachment by the use of evidence of misconduct can result in a conviction of a witness. Explain this concept and give examples.

Impeaching the testimony of a witness may involve….

The police officer then called the dispatcher to check Caballes' license and see if he had any outstanding warrants. As he was writing the warning ticket, he asked for a criminal background check from the dispatcher and asked Caballes if he had ever been arrested. Caballes said no, but the dispatcher told the officer that Caballes had been arrested twice for distribution of marijuana. While the officer was writing the warning ticket, another trooper arrived with a drug detection dog. The dog walked around Caballes' car and signaled alert. Marijuana was then found in the trunk.
Caballes was arrested and charged with trafficking cannabis.

Before the trial, Caballes' motion to suppress the evidence found in the trunk was denied. Caballes was convicted and sentenced to 12 years in prison and ordered to pay a fine of $256,136. Caballes' lawyers appealed, arguing that the police officer did not have probable cause to….

Fingerprints vs DNA Is One
PAGES 7 WORDS 3159

(Aronson, 2007)
The problems and future of DNA Testing

The scientific soundness of the DNA test has not been doubted at all. Courts have increasingly relied on the outcomes of DNA tests. The common man is at a loss to understand the complexities of the method, and as a result in jury trials it is not taken as standard proof but approached with hesitancy. Jurors are ignorant of science and the 'principles of modern genetics' and can get quite confused by all the jargon and confusing tactics of lawyers who are more interested in their cases rather than scientific truth. ("DNA Fingerprinting and Forensics," 2006) Thus the very process that can throw light on the proceedings and produce unfaultable evidence gets mired in sticky debates. The actual concern about the DNA test is not a confused jury but the process of collecting the data and analyzing it. There is no safeguard….

She had been struck several times in the head with a Toney Penna golf club -- so ferociously that the club had shattered into multiple pieces -- and then stabbed in the neck with the broken shaft the club's handle and part of the shaft had vanished. (Kennedy Jr., 2003, Martha Moxley section, ¶ 1)
From evidence retrieved from the autopsy, police determined Moxley's murder occurred at approximately10:00 P.M..

On July 10, 1998, 23 years after Moxley's murder, "Connecticut authorities convened a one-man grand jury consisting of Judge George Thim. The state's attorney Jonathan Benedict took over the Moxley case and began a multimillion-dollar effort to convict Michael Skakel" (Kennedy Jr., 2003, Mark Fuhrman section, ¶ 5). Until this time, Greenwich police and state investigators considered Ken Littleton as the primary suspect for the murder of Moxley (Fuhrman, cited in Kennedy Jr., Mark Fuhrman section, ¶ 7). According to prosecutors' arguments,….

It is possible that other people have already been through there and touched things, and those people must be eliminated as suspects. Avoiding further contamination, however, is vital to ensuring that the crime has the highest chance of being solved. In addition to wearing gloves, collecting evidence at a crime scene also involves making sure that the evidence, once collected, remains free from any contamination (Penrod, 2003). There are specialized containers which are used to collect certain types of evidence from crime scenes. Other evidence, such as hair or fibers, is usually just placed in a clean, dry baggie and sealed up. It is very important at that point that where the evidence came from and who collected it is documented. Any time it changes hands, that must also be documented. This can help to ensure that it can be used as evidence at trial, because there is allegedly….

Relevant Evidence
PAGES 2 WORDS 642

Legal Concept of elevant Evidence
Brady v. Maryland, 373 U.S. 83 (1963)

Facts: Defendants Brady and Boblit were convicted of murder by the state of Maryland, with Brady admitting participation in the crime but stating that Boblit committed the actual act of killing the victim. Boblit confirmed this fact in a written statement recording his personal confession, but during the criminal proceedings prosecutors elected to withhold Boblit's confession from the court, as well as from Brady and his attorney. Upon being convicted of the murder, Brady challenged the decision on the basis of potential violations of the Fourteenth Amendment, which guarantees those accused of criminal conduct the right to due process. The Maryland Court of Appeals affirmed Brady's conviction, but remanded the case for retrial to reassess the question of punishment.

Issues: The prosecution's choice to withhold Boblit's written confession irrevocably altered the sentencing process for Brady, as the court was never made….

Change them often; (2) Use disposable instruments or clean them thoroughly before and after handling each sample; (3) Avoid touching the area where you believe DNA may exist; (4) avoid talking, sneezing, and coughing over evidence; (5) Avoid touching your face, nose, and mouth when collecting and packaging evidence; (6) Air-dry evidence thoroughly before packaging; and (7) Put evidence into new paper bags or envelopes, not into plastic bags. Do not use staples." (National Institute of Justice, 2007)
V. Future of CODIS

The work entitled: "Communication, Documentation and Information Services" states that in the future CODIS will "continue to place a major emphasis on upgrading technology in all areas of its responsibility." (Vest of Research, nd) in a National Institute of Justice report entitled: "The Future of Forensic DNA Testing: Predictions of the Research and Development Working Group" published in November 2000 states that "technology projections for 2010" include transition to….

Ethical Pros & Cons of Criminal DNA data banks
DNA banking of criminal information is a source of controversy among many human rights activists. According to statistics, Criminal DNA databanks offer an effective means of controlling crime. Genetic information on criminals is being collected and stored in many states as a means of identifying current and future criminals. Statistics support the notion that collecting DNA information on criminals helps reduce crime. Case in point, the Division of Forensic Science has managed an average of 37 "hits" per month, where hits refer to a situation where DNA analysis of a crime scene has resulted in suspect matches from previously convicted offenders and subsequent arrest (DCJS, 2004). In Virginia the DNA databank database contains more than 200,000 of criminals (DCJS, 2004).

Proponents of DNA banks argue that DNA identifying information should be collected on larger segments of the population to better control crime. Currently….

Eye Witness Memory and Identification
In the contemporary legal environment, an eyewitness plays a critical role in the legal system. A correct eyewitness identification has helped in advancing an investigation, and can be used to solve a complex case. Despite the importance of eyewitness identification in a legal system, eyewitness misidentification is being identified as the contributing factor to wrongful convictions based on the DNA testing. Typically, the eyewitness misidentification leads to 70% of wrongful convictions based on the DNA evidence in the United States. In cases after cases, it has been proven by the DNA that eyewitnesses are mostly inaccurate. For example, a review of 311 cases reveals that 73% of the convictions have been due to the eyewitness errors leading to wrongful convictions. Evidence have also revealed that eyewitness identifications can sway strong alibis, juries and police. Unfortunately, the memory of some eyewitnesses is either unable to recall events,….

DNA Sequence
PAGES 4 WORDS 1160

human DNA sequence composed of a series of letters such as 'accagacagt' and the objective was to decipher this jumble of letters and interpret the results. I suppose I should report that the process went smoothly and that after a bit of research I now consider myself an expert in regard to the new science of DNA Sequencing. However, I have a thousand more questions now than before I began and even the answers I came up with may or may not be correct. I do know for a fact that this is a pretty new art or science and its potential seems limitless. "DNA itself has thus far shown only modest evidence of possessing any intrinsic catalytic activities, although the prospect that more will be discovered in the future is surely plausible." (Cantor & Smith, 1999, xv)
The internet has made so many sites and processes available to the….

Certainly! Here are some essay topics related to Criminal Investigations:

1. The role of evidence in criminal investigations: How is evidence collected and analyzed in criminal investigations, and what impact does it have on the outcome of a case?

2. The use of technology in criminal investigations: How have advancements in technology improved the process of investigating and solving crimes? What are the potential risks and ethical considerations associated with using technology in criminal investigations?

3. The challenges of conducting criminal investigations in a digital world: How has the prevalence of digital technology, such as social media and smartphones, affected the methods and....

I. Introduction
A. Background information on the death penalty
B. Thesis statement: The death penalty, although widely debated, should be abolished due to its ineffectiveness as a deterrent, the risk of executing innocent individuals, and its violation of human rights.

II. Ineffectiveness as a deterrent
A. Lack of evidence supporting deterrent effect
1. Studies showing no significant decrease in crime rates
2. Countries without the death penalty experiencing lower crime rates
B. Alternative punishment options
1. Life imprisonment without parole as a viable deterrent
2. Focus on rehabilitation and education

III. Risk of executing innocent individuals
A. Wrongful convictions and....

image
2 Pages
Essay

Criminal Justice

Program Budget for Crime Investigation

Words: 738
Length: 2 Pages
Type: Essay

Program Budget AssignmentDNA in confirming, identifying, and exonerating burglary investigations of crime suspects is common in many police departments. This helps them investigate crimes, although traditionally, it has been…

Read Full Paper  ❯
image
5 Pages
Term Paper

Criminal Justice

DNA Evidence in Criminal Investigations

Words: 1714
Length: 5 Pages
Type: Term Paper

, 2007, p. 153). Conclusion The research showed that DNA evidence can be a valuable tool for the criminal justice system, but the effectiveness of such evidence depends on a number…

Read Full Paper  ❯
image
3 Pages
Term Paper

Genetics

DNA Which to Some of

Words: 1164
Length: 3 Pages
Type: Term Paper

In 1866, Mendel discovered that there are "recessive" and "dominant" traits in plants, paving the way for understanding how genes work in predictable ways, and plowing the ground…

Read Full Paper  ❯
image
2 Pages
Term Paper

Genetics

DNA Techniques

Words: 445
Length: 2 Pages
Type: Term Paper

Filtration-Based DNA Preparation for Sexual Assault Cases. Journal of Forensic Science 9/2003 Vol.48, No. The precision of DNA technology allows law enforcement authorities to definitively identify perpetrators of sexual assaults…

Read Full Paper  ❯
image
4 Pages
Research Paper

Criminal Justice

Using DNA to Solve Cold Cases

Words: 1200
Length: 4 Pages
Type: Research Paper

DNA Cold Case Using DNA to Solve Cold Cases Our federal, state and local law enforcement agencies are charged with the responsibility of bringing justice to every case that comes before…

Read Full Paper  ❯
image
7 Pages
Essay

Business - Law

Evidence Discuss the Problems for

Words: 1879
Length: 7 Pages
Type: Essay

"The criterion for the admissibility of a confession has thus evolved into the quality of voluntariness. The aim of admitting into evidence only voluntary confessions is to prevent…

Read Full Paper  ❯
image
3 Pages
Term Paper

Criminal Justice

Evidence Criminal Evidence in Order

Words: 1380
Length: 3 Pages
Type: Term Paper

The police officer then called the dispatcher to check Caballes' license and see if he had any outstanding warrants. As he was writing the warning ticket, he asked…

Read Full Paper  ❯
image
7 Pages
Term Paper

Physics

Fingerprints vs DNA Is One

Words: 3159
Length: 7 Pages
Type: Term Paper

(Aronson, 2007) The problems and future of DNA Testing The scientific soundness of the DNA test has not been doubted at all. Courts have increasingly relied on the outcomes of…

Read Full Paper  ❯
image
10 Pages
Thesis

Criminal Justice

Custody of Evidence One Error

Words: 3068
Length: 10 Pages
Type: Thesis

She had been struck several times in the head with a Toney Penna golf club -- so ferociously that the club had shattered into multiple pieces -- and…

Read Full Paper  ❯
image
1 Pages
Term Paper

Criminal Justice

Trace Evidence Looking for Trace

Words: 374
Length: 1 Pages
Type: Term Paper

It is possible that other people have already been through there and touched things, and those people must be eliminated as suspects. Avoiding further contamination, however, is vital…

Read Full Paper  ❯
image
2 Pages
Case Study

Business - Law

Relevant Evidence

Words: 642
Length: 2 Pages
Type: Case Study

Legal Concept of elevant Evidence Brady v. Maryland, 373 U.S. 83 (1963) Facts: Defendants Brady and Boblit were convicted of murder by the state of Maryland, with Brady admitting participation in…

Read Full Paper  ❯
image
8 Pages
Term Paper

Criminal Justice

Combined DNA Index System Codis

Words: 2066
Length: 8 Pages
Type: Term Paper

Change them often; (2) Use disposable instruments or clean them thoroughly before and after handling each sample; (3) Avoid touching the area where you believe DNA may exist;…

Read Full Paper  ❯
image
6 Pages
Term Paper

Criminal Justice

Ethical Pros and Cons of Criminal DNA Data Banks

Words: 1532
Length: 6 Pages
Type: Term Paper

Ethical Pros & Cons of Criminal DNA data banks DNA banking of criminal information is a source of controversy among many human rights activists. According to statistics, Criminal DNA databanks…

Read Full Paper  ❯
image
3 Pages
Literature Review

Law - Courts

Wrongful Convictions and Dna

Words: 1001
Length: 3 Pages
Type: Literature Review

Eye Witness Memory and Identification In the contemporary legal environment, an eyewitness plays a critical role in the legal system. A correct eyewitness identification has helped in advancing an investigation,…

Read Full Paper  ❯
image
4 Pages
Term Paper

Genetics

DNA Sequence

Words: 1160
Length: 4 Pages
Type: Term Paper

human DNA sequence composed of a series of letters such as 'accagacagt' and the objective was to decipher this jumble of letters and interpret the results. I suppose…

Read Full Paper  ❯