how does genetic fingerprinting work
-After many cycles, millions of copies of the DNA can be produced. -This is useful in DNA fingerprinting, as researchers can do many tests on the same DNA sample. The first step to making a genetic fingerprint requires getting a sample of DNA.This sample can come from blood, semen, hair or saliva, and may be an extremely small sample.CR can be used in DNA fingerprinting as a way to make numerous copies of isolated DNA. The process can selectively amplify a single copy of a desired sequence. First Cycle: -Dna molecules are melted by raising the temperature to 95 degrees Celcius.