How is DNA profiling carried out?

PCR can replicate a small amount of DNA to create a larger sample for analysis. It does this using a repeating process that takes about five minutes. First, a heat-stable DNA polymerase - a special enzyme that binds to the DNA and allows it to replicate - is added. Next, the DNA sample is heated it to around 92°C to separate the threads. read more

DNA Fingerprinting An individual's entire DNA sequence is composed of over 3 billion nucleotides,. Although the sequence is about 99.9% the same as other humans, the remaining 0.1% about 3 million nucleotides is unique to that individual. read more