but it can go both ways, the little DNA they can get goes into something called PCR. which duplicates DNA so they can get more... however, if they are successful at that, they got an infinite amount of your DNA. but, its easier said than done. especially working in uncontrolled environments like outdoors, on a knife, a…
like whats said above, not a lot of places have the technology to extract DNA from fingerprints. not to mention, the amount of DNA that will come out off of a fingerprint will be very little. its very hard to work with reactions with very little DNA. I work in a nucleic acid lab, and i have PhDs that have a hard time doing…