trand is then exposed on x-ray film to use for comparison to other stands. Another way to do the testing is when samples are obtained scientists then use the RFLP technique on the samples to find the DNA fragment length. RFLP stands for restriction fragment length polymorphism. RFLP focuses on sequences of repeated DNA bases that are different in every person.
Some uses of DNA testing are for crimes and for evidence in trials. They can be used to help solve crimes because they can use DNA testing to compare evidence like blood found at a crime scene with the blood of a suspect. DNA testing can also be used to help free people from jail because they can use the DNA to show that the person was not at a crime scene. The DNA testing would show that the samples found at a crime scene did not belong to a person and they could be freed from jail. Blood testing has proven to be a useful tool in a deadly war against crime, drugs, and alcohol (349). DNA testing can be used for many
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