DNA Fingerprint
A DNA fingerprint is a piece of DNA so distinct that it can prove a person's identity. These distinct areas can take on many different forms, but each form is unique to any one individual.
PCR allows the amplification of a single copy of DNA into millions of copies. However this technique requires that the DNA of interest already be of a known sequence in order to design primers that will specifically hybridize to the target DNA.
It is important as:
It's used as evidence in courts, to identify bodies, track down blood relatives, and to look for cures for disease.
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