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How does forensic science help in a criminal investigation
How does forensic science help in a criminal investigation
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The Department of Justice says, "States began passing laws requiring offenders convicted of certain offenses to provide DNA samples. " That DNA evidence can help convict someone of a crime and it helps to uncover more things about the crime itself. Investigators have been using forensic science to help them solve cases since before the 90 's, mostly fingerprints that were found at the crime scenes and on the victims (O 'Brien). DNA evidence has solved countless cases including ones that happened over a prolonged period of time because of the technological advancements there is
Comparing simple techniques simply to retrieve a piece of evidence is completely different as we learn more about the science and learn from the mistakes made in the past. Looking back at the 1800’s and comparing the technology of the 21st century, the difference is certainly huge. The increase in technology makes information more vast and more ideas can be shared easily. Many sciences are based off many “what ifs” while forensic science is more factual and attempt to solve puzzling occurrences and events and get down to what truly
Da-Nisha Mitchell Anthro 3211 Test Your Knowledge Chapter 3 1.Judge or Jury who listens to tell if statements are true. 2.Evidence is anything, objects, witness that are used to make a defendant guilty or Innocent. 3.Circumstantial, conclusive, conflicting and exculpatory 4.Evidence used to make the defendant look Innocent 5.Looking at what is left behind; events, evidence. 6.A direct transfer is when it goes to the source like a drug dealer selling drugs to someone.
Lack of physical evidence: Overall in this case there was a lack of physical presented. There were no conclusive DNA results in the case. There was no weapon recovered. The majority of the evidence presented in this case was circumstantial evidence produce by witness testimony.
Is Jodi Arias guilty of murdering her boyfriend? (hook) Many people say that she is guilty of murder. (Thesis) The evidence,(Blueprint 1) what was said about their relationship (Blueprint 2), Jodi’s testimony (Blueprint 3) and the trial (Blueprint 4) are the points that are going to be covered.
Evidence is vital for any crime scene. No matter the case, police need to be carefully precise, speedy, and methodical to be able to collect this crucial evidence. With the very well handled cases out there, some slip through the cracks. Evidence that is linked to a crime can be contaminated, destroyed, or forgotten about which leads to finding a suspect to be hard. One example of this happening is the infamous murder case of JonBenet Ramsey.
The arson evidence relates to the car crash and how the car was burned to hide the evidence. The evidence from the bite mark cleared up my client, John’s story who stated he was in a bar fight the night prior to when being questioned. The use of blood spatter helped investigators determine where the victim was killed in the cabin and how many possible killers there were. Blood detection helped discover what killed the
A positive aspect of this is that forensic scientists only need a small amount of a sample to get the results they need (“Forensic Science” 12). These samples can come from many other forms of identification other than fingerprints and bloodstains. A few moderate examples include strands of hair, tiny beads of sweat, and a saliva specimen (“Forensic Science” 12). Forensic Science Technicians stated that “crime scene investigators may use tweezers, black lights, and specialized kits to identify and collect evidence.” They also stated that examining autopsies prove to be beneficial in a crime investigation (“Forensic Science Technicians”
Evidence found at the place of the crime can give investigators clues to who committed the crime. For example, investigators can find footprints, fingerprints, or even the murder weapon. In fact, a hatchet was found on property, which detectives believe is the murder weapon(Allard,2013). This is important because the hatchet gives clues to who committed the crimes.
Doing this, helpws protect the evidence and prevent cross contamination. The crime scene is the physical area where a crime is thought to of occurred and where the evidence of the said crime is thought to reside. Vital evidence to a case, can be found at a crime scene. This includes, fingerprints, DNA, foot prints, bullets, bullet casings, fibers, etc. It is important to determine if a crime has in fact been committed, if so, the officer must initiate enforcement action, by arresting or pursuing the offender or dispatching apprehension information.
Today, modern standards require the burden of proof be brought forth by the plaintiff, or prosecution in criminal cases. This means that the accused no longer has to prove they did not commit the crime, but the prosecution has to prove that all the evidence proves the accused did in fact commit the crime in question. Circumstantial evidence is not enough, but physical evidence, or forensic evidence is now required in modern courts for a conviction. Additionally, the modern standard when considering evidence, and for conviction is “beyond a reasonable doubt.”
The former being defined as the evidence collected in order to convict or rule out suspects, and the latter being defined as the way the investigators developed the investigation and how it evolved throughout the ensuing years. In order to evaluate these two different subjects, one needs to examine the similarities and differences between this investigation and theories about how investigation of this type develop, the nuances of this investigation not able to be explained by theory, investigatory elements that
On October 19, monday It was definitely ladies night at the ELLE Women in Hollywood Awards. American actresss Melanie Griffith brought along her leading ladies to the star-studded event, her actress mother Tippi Hedren, 85-year-old, and daughters Dakota Johnson, 26-year-old who starred in Fifty Shades Of Grey and Stella Banderas, 19-year-old. The three generations of women coordinated their red carpet look in elegant black ensembles as they arrived at the Four Seasons Hotel in Beverly Hills. 58-year-old, go for a simple jumsuit which showed off her gym-honed habit and wore her hair pinned up with a slender fringe framing her face.
DNA in forensic science The majority of cells making up the human body are diploid cells carrying identical DNA, with the exception of haploid gametes and red blood cells. Several types of biological evidence such as blood and hair are commonly used in forensic science, which is the scientific study of evidence for crime scene investigations and other legal matters. Forensic science is used for the purpose of DNA analysis, this is the analysis of DNA samples to determine if it came from a particular individual. DNA analysis is done by obtaining DNA samples from an individual; next, a large sample of DNA is produced from amplified selected sequences from the DNA collected.
Crime scene photography, sometimes referred to as forensic photography or forensic imaging, is the art of producing an accurate representation of an accident or crime scene. Crime scene photography is an important asset in the collection of evidence at the crime scene, documents the appearance and location of victims, shell casings, footprints, bloodstain patterns, and other physical evidence. In order for photographs to be admissible in a court of law, the standard for photographs of crime scenes and evidence must be of sufficient quality. Photography has a vital role in the decision made in court because the pictures are to represent the scene as it was exactly. Digital SLR single reflex camera is the most often used camera in crime scene investigations.
