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From Wired Top Stories:
1984: English geneticist Alec Jeffreys is performing advanced but routine lab work when he has a "Eureka!" moment and discovers DNA "fingerprinting."
Jeffreys was working in his genetics lab at Leicester University, trying to trace genetic markers through families, looking for patterns of inherited disease-causing mutations in the repeated DNA segments carried by all humans. He was using the then-new blot technique developed by Edwin Southern to separate and transfer DNA fragments.
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