Microscopic Hair

Improved Essays
Indeed, this is essential to the foundation of all forensic labs (Dale and Becker 173). Forensic scientists use electrophoresis gel to prepare and differentiate fingerprints (Bertino 165). Which is then uploaded to the Combined DNA Index System (CODIS). Allowing access to registered crime lab officials to share and compare DNA profiles (Dale and Becker 176). Sharing this information aids police investigations as mitochondrial DNA can be extracted from fragments of bone and compared to maternal DNA to help identify the skeletal remains of a body. The Immunochromatographic test devices and the OneStep ABAcard HemaTrace test device is used for human blood screening and provides high accuracy in the medical community (Dale and Becker 121). If a …show more content…
Making it more suitable for genetic markers to be used when processing evidence in the lab. Fingerprint examiners must check the results numerous times to prevent false convictions and to maintain the integrity of the science (Bertino 140). Growth of DNA technology has impacted microscopic hair comparison (Dale and Becker 80). Hair is tested macroscopically, in which the length, colour and curliness are examined; and microscopically, in which the pattern of the medulla, pigmentation of cortex and even the type of scales on the cuticles are examined (Bertino 56). A comparison microscope allows for side-by-side comparison of samples. Today, hair can be analyzed by neutron activation analysis, DNA fingerprinting methods (Bertino 51), and many types of microscopes. A strand of hair is place in a nuclear reactor and bombarded with high energy neutrons. In which it detects up to 14 different elements on a single two-centimeter long hair shaft. Ultimately, the probability of any two persons having the same concentration of nine different elements is one in millions (Bertino 57). Therefore, hair remains an error-free indicator that is frequently used in today’s

Related Documents

  • Improved Essays

    Human DNA Fingerprinting

    • 1690 Words
    • 7 Pages

    The two major uses for the information is for personal identification and for the determination of paternity. DNA can be analyzed from a variety of human samples including blood, semen, saliva, urine, hair, buccal (cheek cells), tissues, or bones. The polymerase chain reaction (PCR) is used to amplify the genomic DNA from a sample and electrophoresis is used to arrange the segment.…

    • 1690 Words
    • 7 Pages
    Improved Essays
  • Improved Essays

    The advancement of forensic science has progressed immensely since its conception. The contributions it has made for the legal system are immense. One such example are its techniques used to extract DNA during forensic cases. DNA is considered to be one of the most well regarded and highly assessed sources of information (Gershaw et al., 2010). Another important development used during investigations is CODIS or the Combined DNA Index System.…

    • 1040 Words
    • 5 Pages
    Improved Essays
  • Decent Essays

    Based largely on this compelling statistic, drawn from the testimony of an analyst with the Federal Bureau of Investigation, Mr. Tribble, 17 at the time, was convicted of the crime and sentenced to 20 years to life. Mr. Tribble’s case, along with the exoneration of two other men who served decades in prison based on faulty hair-sample analysis, spurred the F.B.I. to conduct a sweeping post-conviction review of 2,500 cases in which its hair-sample lab reported a match. The preliminary results of that review, which Spencer Hsu of The Washington Post reported last week, are breathtaking: out of 268 criminal cases nationwide between 1985 and 1999, the bureaus elite forensic hair-sample analysts testified wrongly in favor of the prosecution, in…

    • 184 Words
    • 1 Pages
    Decent Essays
  • Decent Essays

    The hair evidence was collected at the crime scene and sent to us to examine. Hair from suspects was also collected and sent to us to examine. All of the hair was examined under a microscope under high magnification. We drew sketches of all the hair and identified the cuticle, cortex, and medulla.…

    • 456 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    Daniel Pinkins Case

    • 815 Words
    • 4 Pages

    The impact of having CODIS updated with every jurisdiction’s complete collection of DNA evidence would be staggering. Not only would law enforcement prosper with complete, accurate information, but most importantly it could prevent crimes from…

    • 815 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    It can only be used as corroboration to strengthen a case. The limitations of hair analysis can be seen through the fact that it can only provide class evidence and cannot be individualized. This limits its ability to convict a supposed criminal, based on hair evidence only. The forensic fibre analysis in this case was not accurate or adequate to convict Guy. The fibres that were said to be found on Christine did not belong to Guy, however the jury was told that the fibres matched fibres that were found from Guy’s home and car.…

    • 837 Words
    • 4 Pages
    Improved Essays
  • Decent Essays

    Dna Crime Lab

    • 117 Words
    • 1 Pages

    DNA is use to solve crimes. Scientist cheats a DNA fingerprint after analysis. Fingerprints are use to help fined the person of who DNA it is. Analysis look at the DNA to fine who fingerprints it is. Crime lab’s look at DNA to help solve crimes.…

    • 117 Words
    • 1 Pages
    Decent Essays
  • Superior Essays

    Patriot Act Pros And Cons

    • 1656 Words
    • 7 Pages

    It also allows for increased cooperation between these groups by removing barriers that had previously existed between intelligence, law enforcements, and national defense agencies. This increased the information flow unilaterally across the country making it easier for agencies to identify terrorist plots from their conception. According to a Department of Justice report from 2004, “This increased ability to share information has been invaluable to the conduct of terrorism investigations and has directly led to the disruption of terrorist plots and numerous arrests, prosecutions, and convictions in terrorism cases” (Department of Justice, 2004). The sharing of databases and consolidation of multiple databases to include the Combined DNA Index System (CODIS). The ability to collect DNA from terrorists made it possible to solve crimes by matching DNA profiles found at crime scenes.…

    • 1656 Words
    • 7 Pages
    Superior Essays
  • Decent Essays

    Hair Analysis Essay

    • 352 Words
    • 2 Pages

    Integral part of our body is Hair and can have a thoughtful power on our pride and self-assurance. “FUR” is hair type normally referred to non human mammal species. Term hair is used for hair on any part of mammalian body including head hair, eyebrow, armpit and eyelash, cilia etc[1]. According to casual viewer, hair have a fairly uniform structure, Varying in person to person only in color and appearance .However , when we consider its anatomy it is very complicated.…

    • 352 Words
    • 2 Pages
    Decent Essays
  • Decent Essays

    Bigfoot Conspiracy Theory

    • 305 Words
    • 2 Pages

    Lastly, there is lots of DNA found in hair that people gathered.…

    • 305 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    Cuticle Scale Patterns

    • 449 Words
    • 2 Pages

    Human hair can have an absent medulla. Then, it is important to analyze the medulla shapes which range from cylindrical, which is seen in human hair, to a string of pearls. Compared to animal hair, a human hair is fine and thin and has pigment that is evenly…

    • 449 Words
    • 2 Pages
    Improved Essays
  • Superior Essays

    Paper Chromatography Paper Chromatography is an analytical method that is used to separate coloured chemicals substances, especially pigments. This is how paper chromatography is conducted: Materials Chromatography Paper (Can also be Coffee Filter) Large Beaker (max one litre) Paper Clips/Sellotape & Skewer Stick Water soluble black marker Water Procedure: Draw a ink dot with the marker on each one of the chromatography paper near the bottom end of the paper. Then stick or paper clip the papers onto a skewer stick, ready for use.…

    • 2539 Words
    • 11 Pages
    Superior Essays
  • Improved Essays

    DNA fingerprinting can be used when someone has left trace of their cells.…

    • 538 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Forensic DNA is the process of using and collecting DNA from crime scenes to solve criminal investigations and to ensure accuracy and fairness in the Criminal Justice System. DNA profiling has grown significantly in the past years and has been extremely useful in identifying suspects, criminals and other people involved in the crime. If the suspect is unidentifiable, DNA evidence is compared to a DNA database to identify the criminal. DNA testing has both advantages and disadvantages many of which relate to ethical, emotional, economic and practicality issues. Research states that an increasing number of criminal investigations have used DNA testing to successfully identify the perpetrator.…

    • 1264 Words
    • 6 Pages
    Improved Essays
  • Improved Essays

    Case study is the study of a court case which helps us to get an insight into the real life proceeding of the theoretical knowledge of something that we have. With respect to forensic science, we can say that case study helps us to get an idea of the principles and techniques that are applied in a real case in order to obtain the results. It also helps us to understand what might be the outcome of a particular approach in terms of the legal system in a specific type of case that is looked into. Here the case of child custody with the help of DNA fingerprinting is to be analysed and considered to help us understand how DNA fingerprinting might play a vital role in proving the parents of a child in a court case. THE TIJING V. DIAMANTE CASE…

    • 1314 Words
    • 6 Pages
    Improved Essays