Forensics Test: DNA Profiling

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What is DNA profiling?

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DNA profiling is a forensic technique used to identify individuals by analyzing their unique DNA characteristics.

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What does STR stand for in DNA profiling?

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STR stands for Short Tandem Repeat, which are repeating sequences of DNA that vary among individuals.

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How many STR markers does the FBI use for DNA profiling?

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The FBI uses 13 STR markers to identify criminals in America.

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What type of DNA is primarily used for creating DNA fingerprints?

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Non-coding DNA is primarily used for creating DNA fingerprints as it varies the most among individuals.

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What are flanking regions in DNA profiling?

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Flanking regions are non-variable segments of DNA that surround STRs and help in the identification process.

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What is the role of PCR in DNA profiling?

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PCR (Polymerase Chain Reaction) is a technique used to amplify small segments of DNA, making it easier to analyze.

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Which DNA fragments travel faster through a gel during electrophoresis?

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Smaller DNA fragments travel faster through the gel compared to larger fragments.

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What is the purpose of DNA fingerprinting?

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The purpose of DNA fingerprinting is to identify individuals based on their unique DNA patterns for forensic investigations.

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What is the significance of non-coding DNA in forensic science?

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Non-coding DNA is significant in forensic science because it contains variations that can distinguish one individual from another.

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What is the difference between coding and non-coding DNA?

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Coding DNA contains instructions for making proteins, while non-coding DNA does not code for proteins and varies among individuals.