DNA Fingerprinting

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What is DNA Fingerprinting?

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A technique used to identify individuals based on their unique DNA profiles.

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What is the role of DNA in inheritance?

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DNA carries genetic information from parents to offspring, determining traits.

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What are alleles?

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Different forms of a gene that can exist at a specific locus on a chromosome.

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What is a locus?

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The specific physical location of a gene or DNA sequence on a chromosome.

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How is DNA extracted for fingerprinting?

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DNA is extracted from cells using chemical solutions to break down cell membranes.

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What is PCR (Polymerase Chain Reaction)?

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A technique used to amplify small segments of DNA, making millions of copies.

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What is gel electrophoresis?

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A method used to separate DNA fragments based on their size by applying an electric field.

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What is a DNA profile?

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A unique pattern of DNA markers that can be used to identify an individual.

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What are short tandem repeats (STRs)?

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Repeating sequences of DNA that are used in DNA profiling to compare genetic similarities.

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How can DNA fingerprinting be used in criminal investigations?

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It can match DNA found at a crime scene to a suspect's DNA, helping to identify or exonerate individuals.