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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  • 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 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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  • 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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  • 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: 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: 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: 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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  • 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 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.
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  • Q: How long does embalming last?

    A: Embalming doesn't last forever; even if done perfectly. Several factors come in to play when asking how soon a body will begin to decompose after being embalmed.
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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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  • 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.
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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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  • 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 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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  • 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.
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  • What are the pros and cons of forensic science?

    Q: What are the pros and cons of forensic science?

    A: Some pros of forensic science are that it provides evidence that can be used to help convict criminals and overturn wrongful convictions, but it can also be costly and time consuming to process the evidence. Even when there is some type of forensic evidence, it is possible for the evidence to be processed incorrectly, yielding an inaccurate result.
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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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  • 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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  • 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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