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Effect of DNA Testing. 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. Human hair can help clarify on what gender the holder belongs to and also tell something on their ethnicity. Prior the DNA knowledge identification of humans was through blood type. This was however not a reliable way at all because different people may have the same blood type thus making it difficult to come up with a clear identity. Since the advent of DNA knowledge the whole world now uses it as the most accurate identification method. 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. DNA relies on comparing certain DNA features called DNA markers between two individuals. 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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Not only in criminal cases that DNA testing can be applied but also on the non-criminal cases or in other words the legal cases. Of the two methods how DNA testing is performed varies from one method to the next. While judging cases from a crime scene where a stain of DNA was collected, it must match that of the suspect to prove them guilty.To prove a suspect guilty in investigation of matters at crime scene DNA stains at crime scene should match those of the suspect. Otherwise no claims are valid when the DNA fails to match the suspect.
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For legal cases DNA testing might be used in child support or immigration monitoring. Where there is no much relevant information that can be used to get the full identity, DNA can be used to determine the degree of relatedness between the finding of the DNA and the documentation at hand. If the ethnicity of individuals is not known DNA testing is applied to establish one. In some parts of the world agencies use DNA in child support to determine real parents of a child for the purposes of providing necessary child care, maintenance and the correct documentation. This case is a good example of legal DNA testing use. DNA testing also works best when it comes to child adoption practices. 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.