The Horn Identity

“The rangers have learned forensic crime-scene principles and the importance of the so-called chain of custody to ensure that the samples are not corrupted. Dr. Harper’s lab performs the analysis and stores DNA fingerprints. The scientists’ database, which they call Rhodis, is modeled after Codis, the F.B.I. system used to link the DNA of suspects to evidence at a crime.” Gina Kolata: Poachers are hunting Rhinos. Geneticists are hunting poachers.