The world of forensic science is full of ever developing technology. Analyzing forensic evidence involves using fingerprints, hair samples, blood, footprints, bite marks, and other sources of material to help identify someone. Each small piece of evidence found at a crime scene can be crucial — leaving the slightest trace of saliva or skin cells can be what convicts a person. Few people know the importance of forensic science more than Steven Avery. In Making A Murderer, the 10 part documentary that originally aired on Neflix, the focus is on Steven Avery. In 1985, Avery was wrongfully convicted of a rape and sentenced to 32 years for the rape of Penny Beernsten — even though there were 16 witnesses to prove that Avery wasn’t present at the …show more content…
Retrieving the sample is the first step in which blood is swabbed, hairs collected, skin cells collected, or saliva swabbed. Next comes extraction which is the process in which scientists release DNA from the sample. Quantitation is the next step in which fake or partial matches come into play — this step involves figuring out if you have enough DNA for a match — the step where partial fingerprints come into play. Amplification is where the scientists makes a copy or copies of the DNA to help find a match. Separation is the 5th step where the analyst separates the DNA to give the ability to match it to someones DNA. The 6th and technically last step is Analysis and Interpretation where the DNA is actually put into a system in order to attempt to find a match. The 7th step is Quality Assurance where the scientists and others look at the sample and match to see if the result was accurate and if everything was done correctly. Results of DNA testing aren’t how it’s shown on television. Reports from the DNA sample are generated into a graph showing the person’s two alleles. Those two alleles can be put into a system to find those individuals who have the same alleles as the ones found in the DNA. (A Simplified Guide to DNA Evidence, …show more content…
In this example, the fingerprints are found on a piece of paper. First you spray the fingerprint with the ninhydrin solution and allow it to dry for a few minutes. After it dries, two sheets of paper towels are placed on the bottom of the sheet of paper and two sheets of paper towels are placed on top. A clothing iron is used to apply heat to the paper towel — the heat and moistness develop the fingerprints. You continuously check the fingerprints to see if they are developed enough and once they are, the fingerprints are placed under an extremely strong light and examined with a magnifier or an image is take of the prints and sent to the lab. Furthermore, spraying the print with acetone after the ninhydrin process can develop more detail from the fingerprint. (Forensics Lab 8.3: Revealing Latent Fingerprints Using Ninhydrin, n.d.) These latent prints need to be fingerprinted as soon as they are developed as latent fingerprints and known to fade. (Wertheim,
To record a crime scene, forensic scientist can use photography, drawings, and videography. Photographs are an important record of the unaltered crime scene, Drawings or sketches provides valuable information when a photograph cannot accurately depict the scale of a room or the relationship of items to each
Forensic science is defined as the practice of utilizing scientific methodologies to clarify judicial inquiries. The field of forensic science contains a broad range of disciplines and has become a vital aspect of criminal investigations. Some forensic disciplines are laboratory-based; while others are based on an analyst’s interpretation of observable patterns (Kourtsounis, 2009). According to the Innocence project’s website; in greater than fifty percent of wrongful convictions, the use of invalidated or improper forensic techniques played a role in cases; which were later
7) Pollen & Spore identification can provide important trace evidence in solving crimes dues to their
“Making a Murderer” starts with Avery’s exoneration of the conviction of rape and assault of Penny Beerntsen. Consistently, Steven Avery asserted that he was innocent and that he had an alibi. Regardless of his assertions he spent 18 years, of a 32 year sentence, in prison before he was finally found innocent by DNA evidence and was released. Reasonably, Avery pursued a $36 million lawsuit against the Manitowoc County for his wrongful conviction. Consequently, this lawsuit made Avery an enemy of the county. When Teresa Halbach, an AutoTrader magazine photographer, was reported
In December last year, Making a Murderer, exploded with popularity on Netflix. The 10 episode television series featured Steven Avery, who was exonerated from prison after almost two decades after being found guilty for a crime he did not commit. Avery then filed a lawsuit against Manitowoc County in Wisconsin for the incorrect verdict. Soon after Avery filed the case, he and his nephew, Brendan Dassey were found guilty for the rape and murder of 25-year-old photographer Teresa Halbach.
How must it be to live in a criminal mind? How must it be to completely loose the sense of normality? I heartily believe that Forensic Psychology holds the key which opens an entire world of psychopathologies, mental deformities, twisted thoughts and repressed needs of bestiality. Besides letting you sink into the most dangerous minds, it gives you the armament to combat everything hiding in there- knowledge.
DNA Fingerprinting, also known as DNA Profiling, is a method used to identify a person using DNA patterns that are specific to him/her. 99.9% of DNA is identical in every human being, but .01% is enough to distinguish between people. It is most commonly used in criminal cases to link a criminal to his/her crime scene, but is also used for paternity/maternity tests, and immigration records. Usually a skin, hair, or body fluid sample is collected from a crime scene or criminal or test candidate, then DNA is extracted and cut using enzymes that recognize patterns in DNA and run through a gel by an electric current in a process called electrophoresis (Annely).
The Insanity defense is mentioned as confusing to the psychiatric and legal concept. Furthermore, it is explained that the word “insane” is more of a legal word, then a medical term, and therefor to prove a person or a criminal insane, one must find the mental condition, of a criminal, severely impaired to the point of losing one’s free will. A psychiatrist may be or may not able to determine such illness, and a jury’s decision solely based on a psychiatrists’ opinion may be grounded on unreliable evidence. Retrieved from; West's Encyclopedia of American Law, edition 2 (2008).
were the bodies of both Nicole Simpson and Ron Goldman. There was a large amount
Nearly anyone you ask would be familiar with the television show CSI. The crime lab is colorful and high-tech with all of the fun toys and machines that analysts use to test the ever abundant amount of forensic evidence from every crime scene. It makes for an exciting drama that you cannot help but get immersed in—it also gives us a false illusion, however, creating what has been dubbed as the “CSI effect” (Baskin, 2011). This effect describes the idea that crime shows such as CSI generate unreal expectations, making viewers believe that forensic evidence should be existent in all criminal trials, therefore affecting their overall perspective on a case (Baskin, 2011). But in reality, forensic labs are not that glamorous. In fact, the
Forensic Science has contributed to our world a great deal. People often misunderstand Forensic Science and believe it is much more capable than it really is. As a matter of fact what you see on T.V. is around 80% false or over exaggerated in some way. To Start of, Criminal Investigation is the largest and most known form of Forensic Science. Some of the more known areas include; Fingerprinting, Ballistics, DNA Identification, Fiber Samples, Computer Animation, Documentation analysis, etc. To get this out of the way in the beginning, what you saw on last night’s law and order is far from the truth. Things they do in a matter of hours take months at a time, and most of the time aren’t even plausible concepts.
between a cut (an injury that is longer than deep) and a stab wound (an injury
Today, more than ever, the quality of evidence in criminal cases is scrutinized because of contamination. Contamination is the introduction of something that physically corrupts a substance at a crime scene that was not previously there; it comes in many forms and most often times comes from the humans who investigate a crime scene. It is imperative that prevention of cross-contamination is implemented when gathering evidence. Several of the more sensitive forensic techniques such as trace analysis, bloodspatter interpretation, and DNA comparison are not being used to their fullest potential. Items of physical crime scene evidence are not always visible to the naked eye and may be easily overlooked so deliberate and methodical approach to collection and preservation of evidence is essential. Prosecutors have lost cases due to crime scene contamination; this could be prevented by simple and productive behaviors. The U.S. Supreme Court, in a leading case on physical evidence, stated:
The human body and brain has always intrigued and fascinated me, but more in death than living. In middle school, a TV show called CSI: Crime Scene Investigation appeared to me every day afterschool. Whatever I did, I could not stay away for one second. Even my mom was weird out on how comfortable I was with crime scenes having blood and gruesome dead bodies lying around, which hasn’t changed.
Nothing is more crucial to any investigation than the actions of the first officers on the scene and the actions they take regarding the preservation of the crime scene, detention of witnesses and an arrest if possible. The immediate objective of the first officers on the scene must be the safety of all parties involved and all else follows