Forensic Science

A:

Creating your own DNA fingerprint helps you to learn about DNA. This process takes about an hour to put together and overnight to set. You need a DNA sample, beakers, a laboratory, restriction enzymes, a gel tray, an electrophoresis apparatus, buffer solution, a staining sheet and a staining tray.

See Full Answer
Filed Under:
  • How do you create a DNA fingerprint?

    Q: How do you create a DNA fingerprint?

    A: Creating your own DNA fingerprint helps you to learn about DNA. This process takes about an hour to put together and overnight to set. You need a DNA sample, beakers, a laboratory, restriction enzymes, a gel tray, an electrophoresis apparatus, buffer solution, a staining sheet and a staining tray.
    See Full Answer
    Filed Under:
  • What tools do forensic scientists use?

    Q: What tools do forensic scientists use?

    A: Forensic scientists use various tools to accomplish their tasks including rubber gloves, a head rest, dissection scissors, ropes, and goggles, including arterial and jugular tubes. They also have an autopsy table, autopsy saws, blades and a dissecting knife. Other tools include X-ray boxes, a fingerprint set, an osteometric board, a water bath and post-mortem needles.
    See Full Answer
    Filed Under:
  • How is spectrophotometry used in forensics?

    Q: How is spectrophotometry used in forensics?

    A: Spectrophotometry is used in forensics to identify drugs or other toxins. When identifying an unknown drug or chemical, forensic scientists will use spectrophotometry to analyze how the unknown substance reacts to ultraviolet and infrared light to identify its composition.
    See Full Answer
    Filed Under:
  • Why is forensic science so important?

    Q: Why is forensic science so important?

    A: Forensic science is important because it aids in establishing the guilt or innocence of potential suspects. Forensic evidence is also useful for linking crimes, which establishes the patterns of crimes and also narrows the number of probable suspects.
    See Full Answer
    Filed Under:
  • What does an undertaker do to a body?

    Q: What does an undertaker do to a body?

    A: An undertaker's roll is to prepare a body for the embalming process as well a prepare the body for a funeral service if necessary. When an embalming takes place, an undertaker cleans the body, injects embalming fluid into the arteries, treats body cavities and other processes to prepare the body for burial, according to ListVerse. An undertaker is also known as an embalmer.
    See Full Answer
    Filed Under:
  • How is chromatography used in forensic science?

    Q: How is chromatography used in forensic science?

    A: Chromatography is used in forensic science to identify drug use, differentiate between different bomb powders and highlight the chemical composition of different substances. As an approach that allows forensic scientists to separate chemical components, chromatography either detects the substance immediately, or it makes it easier to move onto a precise test.
    See Full Answer
    Filed Under:
  • Q: Who is Leone Lattes in forensics?

    A: Leone Lattes was the forensic serologist who, in 1915, developed a method for restoring dried blood samples so they could be tested for blood type. In 1932, Lattes developed a method for determining blood type from a dry sample.
    See Full Answer
    Filed Under:
  • What are the five steps in the scientific method?

    Q: What are the five steps in the scientific method?

    A: According to HowStuffWorks.com, the five steps in the scientific method are make an observation, ask a question, form a hypothesis, conduct an experiment and accept or reject the hypothesis. Various numbers of steps are sometimes used to explain the scientific method, but they all include the same ideas.
    See Full Answer
    Filed Under:
  • What is blood spatter analysis?

    Q: What is blood spatter analysis?

    A: Blood spatter analysis is a forensic science involving the study of bloodstain patterns that criminologists use to reconstruct the events of a suspected crime. Analysts examine subtle factors such as the placement, shape and volume of blood to determine the weapon and amount of force used in an attack.
    See Full Answer
    Filed Under:
  • Q: How do you obtain DNA for DNA fingerprinting?

    A: To obtain DNA for DNA fingerprinting, a sample of cells from skin, hair, blood, saliva or semen is collected. The white blood cells from the sample are broken open using detergent, and then the usable DNA is separated from all the other cellular material. Subsequently, the extracted DNA is cut into smaller pieces using restriction enzymes.
    See Full Answer
    Filed Under:
  • Q: What is some good information about forensic ballistics?

    A: According to Explore Forensics, ballistics in the area of forensic science deals with firearms as to why and how they are used, most frequently in the practice of murder. Many people do not realize that when a person is shot, the wound and the condition of the victim can tell a lot about the weapon that was used, notes Explore Forensics.
    See Full Answer
    Filed Under:
  • How do you pass a polygraph test?

    Q: How do you pass a polygraph test?

    A: A polygraph test can be passed by manipulating the body's response to control questions. A participant's lies are only considered lies when they register a higher response than control questions. The results can therefore be manipulated in a participant's favor if the participant is able to elicit a higher response to control questions than the relevant questions of the examination.
    See Full Answer
    Filed Under:
  • What are the different stages of rigor mortis?

    Q: What are the different stages of rigor mortis?

    A: The six stages of rigor mortis in humans include absent, minimal, moderate, advanced, complete and passed, according to the Medicolegal Death Investigators' training manual on Education Portal. When rigor mortis occurs, the body's muscles harden after death in a gradual process.
    See Full Answer
    Filed Under:
  • Q: What are some cases that forensic entomology has been used to solve?

    A: Insects have been used to solve many crimes, including a 1991 "Ken and Barbie" murder and a 1997 murder of two young children. Forensic entomology is the study of insects primarily for medico-legal purposes. The primary purpose of carrying out a forensic entomology study is to estimate the time since death, states the Simon Fraser University Museum of Archaeology and Ethnology.
    See Full Answer
    Filed Under:
  • Q: What are some types of forensic science?

    A: The field of forensic science includes a number of disciplines, such as anthropology, odontology and toxicology. These experts find, collect and preserve evidence in criminal cases.
    See Full Answer
    Filed Under:
  • How long do fingerprints stay on objects?

    Q: How long do fingerprints stay on objects?

    A: No scientific methods can determine the length of time for which a fingerprint lasts on an object. There are many factors that determine how long a fingerprint lasts on any surface or object, with environmental conditions being the primary influence on the longevity of the prints.
    See Full Answer
    Filed Under:
  • What are some famous forensic entomology cases?

    Q: What are some famous forensic entomology cases?

    A: Some famous forensic entomology cases include the cases of Paul Bernardo, David Westerfield and Ronald Porter. The forensic entomology information was presented in trial, but was not always used by the judges due to the constraints on forensic entomology.
    See Full Answer
    Filed Under:
  • Q: What are Leone Lattes's contributions to forensic science?

    A: Leon Lattes developed a method of blood testing that determines the type and characteristics of a dried bloodstain. Bloodstain examinations are often used to gather important forensic evidence in criminal cases.
    See Full Answer
    Filed Under:
  • What is the most common fingerprint pattern?

    Q: What is the most common fingerprint pattern?

    A: Fingerprints patterns are of three types: arches, loops and whorls, and loops are the most common pattern, being found in 65 to 70 percent of all fingerprints. In this pattern, ridges or curved lines enter from one side of the finger, form a loop and exit from the same side.
    See Full Answer
    Filed Under:
  • How long does it take for rigor mortis to start after a cat passes?

    Q: How long does it take for rigor mortis to start after a cat passes?

    A: Rigor mortis can take between three to six hours to set in after the death of a cat, according to Rest in Pets. The condition, which is part of the decomposition process, is a natural occurrence after the death of an animal.
    See Full Answer
    Filed Under:
  • Q: What techniques did Alec Jeffreys develop for genetic fingerprinting?

    A: Professor Sir Alec Jeffreys' 1984 development of genetic fingerprinting revolved around a technique that points out the unique nature of an individual's DNA code. He showed that restriction fragment length polymorphism, a variation in chromosome pairs, can occur in over 10,000,000 different places, indicating that a person's genetic code is unique to the point that it can be used for positive identification.
    See Full Answer
    Filed Under: