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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  • 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 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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  • 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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  • 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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  • 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.
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  • Q: What are some facts about fossils?

    A: Fossils are the remains of plant or animal life that were buried for millions of years until they finally turned to stone. Most fossils found today are from creatures that lived in the sea, as these had a much better chance of being buried before they were destroyed.
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  • What do scientists use to find out how old an archaeological find is?

    Q: What do scientists use to find out how old an archaeological find is?

    A: Scientists use dating techniques to find out the age of archaeological finds. There are many types of dating techniques, including natural dating techniques, electromagnetic dating techniques, chemical dating techniques and radiometric dating techniques.
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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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  • Q: What is a buccal swab test?

    A: A buccal swab test is a method of collecting DNA samples. According to the Laboratory Corporation of America, DNA samples are collected by rubbing the inside of the mouth with cotton-tipped swab. Unlike obtaining DNA from blood, buccal swab tests are non-invasive.
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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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  • What is forensic photography?

    Q: What is forensic photography?

    A: Forensic photography is a type of photography that showcases accidents and crime scenes. This type of photography creates a visual record of evidence usable by the police and in court.
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  • Q: What is a friction ridge?

    A: A friction ridge is most commonly known as the skin that is found on the palms of the hands and the bottoms of the feet. Fingerprints are another name for a friction ridge.
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  • 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.
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  • Q: What is the purpose of funeral embalming?

    A: The purpose of embalming is to preserve the tissues in the body and delay decomposition. Many people choose embalming because it helps the body look more life-like for public viewing purposes at a funeral or memorial service.
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  • How is chromatography used to solve crime?

    Q: How is chromatography used to solve crime?

    A: Chromatography is used to separate substances from crime scene samples to pinpoint information about materials. This information can then assist investigators with finding what was used by criminals.
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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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  • 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: 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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  • What fossils are classified as original remains?

    Q: What fossils are classified as original remains?

    A: Original remains are the preserved and unchanged remains of plants and animals. These fossils most often come in the form of bones, animals trapped in ice, or insects trapped in resin.
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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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  • Does film footage exist of Bigfoot?

    Q: Does film footage exist of Bigfoot?

    A: The scientific community offers no proof of the existence of Bigfoot as of 2015, but there is a famous recording that reportedly provides video footage of the creature. Roger Patterson shot a 16mm film in 1967 which purportedly captures Bigfootメs image in a wooded area.
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