Forensic Science

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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.

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  • 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.
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  • 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.
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  • 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.
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  • 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.
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  • 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.
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  • What are some forensic anthropology cases?

    Q: What are some forensic anthropology cases?

    A: In 2004, forensic anthropology findings led New Jersey prosecutors to reinvestigate the cause of James Ridgeway's death, which was inconclusive in 1979. In another case, reconstructive techniques helped identify the fragmented remains of a San Diego woman named Joy Risker, whose body was buried in an Arizona desert.
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  • Q: What is a dissecting tray used for?

    A: A dissecting tray provides containment for materials resulting from the dissection process. It allows enough space for the analysis of the specimen to take place while also providing drainage for water and other substances.
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  • 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.
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  • 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.
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  • 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.
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  • What are the different types of toxicology?

    Q: What are the different types of toxicology?

    A: Toxicology includes the fields of forensic, chemical, aquatic, eco- and environmental toxicology, and toxicogenomics. Toxicology is a biological field of study on the harmful effects of chemicals on biological organisms.
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  • How long do fingerprints last?

    Q: How long do fingerprints last?

    A: Each human has a unique set of fingerprints, and every person will have the same unique prints for their entire lives. The length of time a print lasts on a specific object depends on the object's surface characteristics and environment.
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  • 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.
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  • Q: What clothes does a forensic scientist wear?

    A: When entering a crime scene, forensic scientists wear protective clothing over their regular clothes to prevent contamination. This may include a full-body suit with a hood, a mask, booties and gloves.
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  • Q: What are the differences between DNA fingerprinting and regular fingerprinting?

    A: Regular fingerprinting methods conduct tests and make records of finger and thumb prints of an individual, while DNA fingerprinting tests the deoxyribonucleic acid of a person, which is located within the nucleus of all cells in the body, states The Tech Museum of Innovation. During DNA fingerprinting, scientists analyze the genetic material to determine the differences in DNA between individuals.
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  • Q: How do you create a hypothesis about fingerprinting?

    A: To create a hypothesis for fingerprinting, investigators ask questions based on what they know about the specific topic in question and come up with a statement that can be proven through an experiment. Then, based on their prior observations, they develop a statement to test. For example, an experiment on whether fingerprints are hereditary might read "If fingerprints are hereditary, then testing with a fingerprinting kit will show that all members of a family have similar fingerprints."
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  • 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.
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  • Q: What are some different forms of biometric identification?

    A: Biometric devices are security measures that use an element of a person's unique biological properties to identify him, rather than a more easily copied identifier such as a password. Biometric devices typically use a component of biology that is difficult to use fraudulently, such as fingerprints, handprints, a voice pattern or the retina of the eye. It is fairly safe to assume that if a person has the correct biometrics, he is using the correct identity.
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  • 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.
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  • 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.
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  • 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.
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