Forensic Science Principles

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What is the Law of Individuality?

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The Law of Individuality states that every individual has unique characteristics that can be used to identify them, such as the unique markings left by a firearm on bullets.

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What is the Law of Probability in forensic science?

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The Law of Probability refers to the likelihood of a particular piece of evidence belonging to a specific individual, often expressed in statistical terms.

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What does the Principle of Exchange state?

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The Principle of Exchange, proposed by Edmond Locard, states that whenever two objects come into contact, there is always a transfer of material between them.

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What is the significance of the Law of Comparison?

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The Law of Comparison allows forensic scientists to compare evidence from a crime scene with known samples to establish a connection or match.

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What is the Principle of Individuality?

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The Principle of Individuality asserts that every object or individual can be distinguished from others based on unique characteristics.

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How does chromatography work in forensic analysis?

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Chromatography is a technique used to separate mixtures into their individual components, allowing forensic scientists to identify substances such as drugs in a sample.

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What is Locard's Exchange Principle?

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Locard's Exchange Principle states that the perpetrator of a crime will bring something into the crime scene and leave with something from it, thus providing forensic evidence.

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What is the role of DNA analysis in forensic science?

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DNA analysis is used to identify individuals based on their unique genetic makeup, providing strong evidence in criminal investigations.

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What is the importance of unique markings on firearms?

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Unique markings on firearms, such as striations on bullets, can be used to match a bullet to a specific gun, linking it to a crime.

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What does the term 'forensic evidence' refer to?

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Forensic evidence refers to any material collected from a crime scene that can be analyzed scientifically to help solve a crime.