How does DNA identify a person? Short fast 1 minute answer

DNA is a unique identity for anyone that is unique and can not be copied easily with simple technologies and used in forensic science.

DNA can be used to tell people apart because humans differ from each other based on either their DNA sequences or the lengths of repeated regions of DNA. … The technique of gel electrophoresis separates DNA by size, thus allowing people to be identified based on analyzing the lengths of their DNA.

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