It would appear the days when DNA evidence was counted as being 99.99999999999999999% trustworthy has encountered a problem, scientists from Israel has in a lab proven that they could falsify DNA evidence so that they would appear to come from a specific individual – all they needed was apparently a DNA profile of the person they wanted to ‘mimic’ and they could produce spit and blood with his/her DNA profile (I would suspect seamen could also be produced this way). This way DNA evidence like eg blood could be falsified and put on a crime scene to frame someone, it is a scary thought as DNA evidence today carry very high weight in courtrooms.
All may however not be lost as the company behind this breakthrough is working on a detection model to spot these ‘fake’ DNA samples, but still the thought is scary.
http://newz.dk/dna-beviser-kan-fremstilles-i-laboratoriet
http://www.nytimes.com/2009/08/18/science/18dna.html?_r=1
http://www.fsigenetics.com/article/S1872-4973(09)00099-4/abstract