What is a DNA fingerprint?
Quick Answer
A DNA fingerprint is a pattern of DNA markers used to identify a person with very high confidence. It relies on variations in specific regions of the genome that differ between individuals.
The Full Story
DNA fingerprinting, also called DNA profiling, compares variable regions of genetic material to distinguish one person from another. It was pioneered in 1984 by British geneticist Alec Jeffreys. The technique is widely used in forensics, paternity testing, and identifying human remains. Modern profiling usually examines short tandem repeats, or STRs, which are highly variable segments in the genome. Because the method is based on inherited genetic patterns, it is one of the most powerful tools in modern identification science.
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Suggested video title for this topic:
"How can tiny bits of DNA identify one person? The answer is in your genetic 'fingerprint.'"