DNA Profile Review

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What is a DNA profile?

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A DNA profile is a unique representation of an individual's DNA characteristics, often used in forensic science to identify individuals.

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What are alleles?

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Alleles are different versions of a gene that can exist at a specific locus on a chromosome.

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What does STR stand for in genetics?

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STR stands for Short Tandem Repeat, which are repeating sequences of DNA that are used in DNA profiling.

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How many alleles can a child inherit from each parent?

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A child can inherit one allele from each parent, resulting in two alleles for each locus.

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What is the significance of the CODIS database?

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CODIS (Combined DNA Index System) is a database used by the FBI to store and compare DNA profiles from crime scenes and convicted offenders.

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What is the purpose of DNA profiling?

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DNA profiling is used to identify individuals based on their unique DNA characteristics, often for forensic investigations or paternity testing.

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What is the maximum number of alleles a child can have at a single locus?

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A child can have a maximum of two alleles at a single locus, one inherited from each parent.

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What is the relationship between STRs and genetic diversity?

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STRs contribute to genetic diversity as they vary in length and number among individuals, making them useful for identification.

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How can DNA profiling be used in criminal investigations?

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DNA profiling can match DNA found at a crime scene to a suspect's DNA, helping to establish or exclude them as a perpetrator.

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What is the role of the FBI in DNA profiling?

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The FBI manages the CODIS database, which helps law enforcement agencies share and compare DNA profiles.