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How Useful DNA Testing Can Be. From the time of discovery of DNA testing in the mid 80s, use of DNA in determining relationships and also human identity DNA has emerged out as a vital item in crime investigation and also in the civic world. A relationship and its nature between given individuals can be established using DNA testing. When it comes to identifying individuals body cells whether dead or alive can be used to identify an individual. Even body parts made of continuous dead cells like hair can be used to tell gender and ethnic background of an individual. Method of identifying people using blood types was used before the invention of the DNA testing method. However blood typing was not reliable at all since different individuals could have similar blood type despite the lack of any blood relationship. From the invention of DNA testing all fields have preferred it to other means of identification. From the invention of DNA testing technique it was revealed that even if there is a blood relationship between people there can never be 100% similarity when it comes to DNA matter since it is unique in every individual. This DNA testing heavily relies on certain unique DNA features called DNA markers. When the patterns from different DNA samples match, then they are likely to come from the same individual. Matching of DNA from different samples means that they belong to that individual at hand or in cases of high degree of similarity it means that the individuals are related. The similarity degree shows the degree of relationship of the individuals owning the samples.
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Now for both criminal and legal cases DNA testing can be applied. However DNA testing is performed according to which case is being handled of the two. Verdict declaration in the investigation of crime scene matters is only declared when the DNA matches that of the suspect. In any cases it is against legal rights of a person to be detained out of non-evident suspicion.
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For legal cases DNA testing might be used in child support or immigration monitoring. In cases of legal doubt DNA testing helps establish the best platform for identification and establishment of a relation. If the ethnicity of individuals is not known DNA testing is applied to establish one. Legally in certain parts of the world, sector of child support DNA testing is used to prove the biological parents of a child for the child to receive essentials entitled to them. This case is a good example of legal DNA testing use. Also when it comes to child adoption practices DNA testing helps a great deal. Ethnic backgrounds is a matter of consideration when it comes to adoption DNA testing helps shed light on the ethnicity of a child during adoption.