DNA has changed how we investigate crimes by showing us their identity. DNA is part of your blood, saliva, hair, and fingerprints. The two main tests are PCR and RFLP.
PCR(polymerase chain reaction) is a single or few copies of DNA. It generates thousands to millions of DNA sequence. It consists of cycles of repeated heating and cooling of the reaction for DNA melting.
RFLP(restriction fragment length polymorphism) is a technique that exploits variations in homologous DNA sequences. It refers to a difference between samples of homozygous DNA molecules.
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