Genetic barcodes will accurately determine the owner of the fingerprint. The development of scientists from Duke University and the Tandon School of Engineering is described in the journal IEEE Transactions.
The system proposed by scientists allows us to exclude the falsification of fingerprints taken by DNA fingerprinting, on the way from the crime scene to the laboratory.
DNA fingerprinting is a method of identifying a specific person, organism or disease, based on a small amount of genetic material. Although approximately 99.9% of the DNA between two unrelated people is the same, approximately 3 million base pairs remain, which differ. And in this potentially identifying dataset, some short segments of DNA sequences are much more likely than others to vary in composition from person to person.
Instead of sequencing the entire human genome, scientists can select several short sequences for identification. In DNA fingerprinting, a method called polymerase chain reaction (PCR) repeatedly repeats genetic sequences so that they can be easily read.
Based on specific combinations of nucleic acids, genetic samples can be compared with their sources. These are 13 DNA sites that vary greatly from person to person.
In the new work, the researchers created a system for marking DNA fingerprinting samples, which, on the one hand, hides their owner when the data storage system is hacked, and on the other hand, it does not allow falsification when they are delivered from the place of sampling to the laboratory.