Interpreting the knife blade DNA results in the trial of Amanda Knox and Raffaele Sollecito

DNA HelixThe most important and apparently decisive evidence advanced by the prosecution was DNA evidence found on a knife seized by the police from the kitchen of Raffaele Sollecito’s apartment, and on the hook of the bra worn by the victim, discovered in the room where the murder was committed. According to the Scientific Police – Amanda Knox’s DNA profile was present on the handle of the knife and that of Meredith Kercher on the blade.

This article discusses whether Meredith Kercher’s DNA was on the knife blade, or whether the result was due to contamination.