How is DNA typing done?
DNA typing is done by scientist, finding markers in DNA samples from things like blood, hair or bone samples. They are found by designing small DNA probes that bind to the complementary DNA sequence. These bindings will create a very unique, distinctive pattern for an individual. They then take this pattern and match it up to evidence samples that were found at the scene. If one marker is the same, it doesn’t give strong enough evidence, because one marker is not unique to each person, but when there are four, five or more, then the probability is very high that the evidence sample and the DNA sample taken are from the same person.
