DNA is useful to identify an individual because everyone’s genetic code (their genome) is unique, unless they have an identical twin. The string of chemical letters in a person’s DNA can therefore act like a unique bar code to identify them.
DNA is useful to identify an individual because everyone’s genetic code (their genome) is unique, unless they have an identical twin. The string of chemical letters in a person’s DNA can therefore act like a unique bar code to identify them.
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