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How DNA became evidence: the method, the record, and the limits of a profile.

Section 3 of 6

The Record

The documented history, kept in one list: the observation in Leicester, the exoneration that came before the first conviction, and the reviews that withdrew or restricted methods afterwards.

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Alec Jeffreys noticed repeating sequences that varied enough between people to identify them, and called the result a genetic fingerprint.Photo: Alec Jeffreys · Wikimedia Commons