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  • An example of a DNA profile.
    Rights: B.Steffen/National Institute of Standards and Technology Published 27 November 2007, Updated 5 December 2022 Size: 120 KB Referencing Hub media

    This DNA profile is based on 24 genetic markers (stretches of DNA found at specific locations in the genome). Each genetic marker contains a short tandem repeat (STR)—a section of DNA that repeats itself, like a word typed over and over again, with the number of repeats varying from person to person.

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