Objective To understand the forensic practice of DNA profiling from minimal amount of DNA.

目的了解微量dna分型的法医学应用的可行性。

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His discovery of the DNA fingerprint two decades ago made DNA profiling and testing possible.

NPR: Pioneering DNA Forensics

Faced with the problem that DNA gathered at the scene did not match any sample in the national DNA database, they tried what is known as "ancestral DNA profiling".

BBC: Night Stalker case: Delroy Grant's reign of terror ends

Since the DNA profiling discovery in 1984, Sir Alec has won world acclaim for his work.

BBC: Sir Alec Jeffreys (PA)