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DNA Polymorphism


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Alec Jeffreys
   discovered   
DNA Polymorphism
(1985) Discovered that some DNA sequences are unique to each individual, leading to the birth of DNA forensics. His DNA technique was first used to hunt down a child molester who killed two girls. The suspect, Colin Pitchfork, was convicted of murder after DNA samples taken from him matched semen samples taken from the two dead girls.






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