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Is Forensic Biology Important In Criminal Investigation

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Forensic biology is one of the most reliable sources of crime scene evidence. The particular case will require forensic biology because it involves murder, which is a serious crime. All serious crimes attract hash punishments, which may involve spending an entire lifetime in prison (Kayser, 2017). Forensic biology will also be necessary because no human eyewitnesses are present to help solve the mysterious murders. Forensic biology will provide critical leads concerning the people who committed the murder. By examining the DNA evidence obtained from the crime scene, the law enforcement officials can be able to identify the suspects (Kayser, 2017). Identifying the suspects will require the law enforcement officials to match samples of possible suspects with those obtained from the crime scene. A non-match could be a strong indicator that the suspect was not involved. …show more content…

The case indicates that some bodies had undergone decomposition leaving skeletons while another was partially decomposed. It is not possible to prove the identity of the victims without the use of forensic biology, and in particular DNA matching. Matching DNA profiles of the crime victims with DNA profiles of people who have lost their loved ones under mysterious circumstances will help in establishing or excluding paternal relationship, and thus the identity of the victims (Kayser, 2017). It is highly possible that the crime scene contains DNA samples of the person who committed the

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“On September 20th, 1986 a young woman was killed and, left behind at the scene, was a piece of DNA that investigators hoped would help solve the case” (Biemesderfer). There was no way to identify people yet. Nowadays, you can identify whose footprint it is by investigators and

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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

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Photographs of the evidence were began to be taken. After searching for a while more, investigators found three bodies two small, & one adult. An axe was found near the adult, while on the two children hacks were found on their

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The murder of Caylee Anthony was a highly publicized murder. The body of Caylee Anthony was found dumped in a swampy wooded area not far from her home. All that was left of her body was the skeleton remains. When a body is dumped outside and left lifeless like that it will start to decay. The weather and how long the body has been there effects the condition the police find it in.

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The result of this technique indicated that the victim was killed between October 9 and 13. Using three different techniques they obtained very similar data. The last piece to solve this puzzle was to identify the victim. They got a fingerprint from the victim but there was not a match in the database. They move on into the missing people report in which they found a woman name, Darlene Smith who matched all of their forensic evidence.

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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.

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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”

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He claimed he was working at a bar filled with customers when the crime was committed. With all of his alibies, he was still charged with a crime he didn’t commit all because they found bite marks on the little girl’s wrist that seemed to match up with him. He was later released from prison when the true murdered was caught. Is DNA a reliable forensic tool?

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This was achieved by identifying the suspect. According to the gel, suspect number two’s DNA was found at the crime scene. This is known because the crime scene DNA and suspect two’s DNA both traveled the same distanced. And said before DNA is very polymorphic; no two pieces of DNA will be the same when cut by the same enzyme (Edvotek, 2014). This is also shown in Hyun-Jung Choi’s lap report.

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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.

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The Fourth Amendment was created in response to the British practice of issuing a general warrant—warrants that were not limited in scope. The ultimate check that the Amendment places on law enforcement is one of “reasonableness.” This creates two broad categories of searches: searches that would be unreasonable without a warrant and searches that do not require a warrant. For example, warrants are not relevant in the context of school administration. However, warrants have historically always been required in the course of ordinary law enforcement.”

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Murders that are left unsolved leaves family members puzzled and wondering. It is important that we solve murders so we can stop the victim from doing it again. I already know a bit about DNA evidence from my KWL chart crime research, but I would need to learn more about its specific application in cold cases. In my preliminary research, I learned that DNA has helped solve many cold cases over the years. There have been cases where decades-old evidence was retested with updated technology and resulted in identifying the victimizer.

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Science has come a long way over the years. It has helped countless every day struggles and cure diseases most commonly found. What you don’t hear about however is the advancement of forensic science. Forensic science has helped solve countless cases of murder, rape, and sexual assault. In the case of John Joubert, it helped solve the murders of three young boys with one small piece of evidence that linked him directly to the crime.

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● It can be used to determine if a person is guilty or not. The evidence from forensic can be enough to put a person into prison. ● It can be used to solve old unsolved cases if there is still DNA available from that case. ● Help identify victims in big disasters where the body of the person can not physically be easily

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1251 Words | 6 Pages

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.

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