Concerns or Negative Impact of DNA Fingerprints
Probability
Like nearly everything else science, DNA fingerprinting is only based on PROBABILITY. When someone's DNA fingerprint is "taken" it's not actually a blueprint for that specific person. It's just a shell kind of, and is very vague. All that can really be done with the fingerprint is for the scientist to compare it with the DNA of something else and see how CLOSE they are. If the probability of the first fingerprint is 1/2,000,000, it's very possible that both fingerprints are a match. If the probability that both of them are alike but the ratio is only 1/10 (this means that 10 people picked randomly on the street will have a fingerprint that looks exactly like theirs) , then they should definitely do a lot more testing. The print in this case is much too common and could belong to anyone.
Population Genetics
Fingerprints are not are not distributed evenly across all of human population because genes are inherited within families and within ethnic groups. The fingerprint that they're using for comparison will never be exact because people are always changing and new genes are always being passed on. Certain markers withing the fingerprints occur often among Hispanics, but will show up rarely with Caucasians or African-Americans people.Technical Difficulties or Misinterpretation> There are errors and miscalculations that occur with DNA fingerprinting. This means that potentially the wrong person can be identified and sent to jail for a crime they did not commit, or a persons remains were incorrectly identified and sent home to the wrong family. That means a guilty person can walk free. Not cool. If a newer DNA specialist (say just out of college) misinterprets the results of the test, because this does happen, then things can go wrong as well.You can read more about this under the dna fingerprinting process, and how does dna fingerprinting workoptions to the left.
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