How Useful DNA Testing Can Be. History of DNA testing is rated approximately #% years ago, it has been used in human identification and establishing relationships present among different individuals. DNA testing helps determine if there is a relationship between given individuals and also aids in determining what kind of relationship is there. In the identification environments any human body component material that carries an individual’s DNA can be used for identification 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. However blood typing was not reliable at all since different individuals could have similar blood type despite the lack of any blood relationship. 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 degree of relatedness between two people is shown by the degree of similarity between their DNA 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. However DNA testing is performed according to which case is being handled of the two. 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. In any cases it is against legal rights of a person to be detained out of non-evident suspicion.
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A non-criminal way of using DNA test is child support or immigration. In cases of legal doubt DNA testing helps establish the best platform for identification and establishment of a relation. By DNA testing ethnic background of an individual can be determined. Various parts of the world use DNA testing in child support in the determination of biological parents for the welfare or the child. Such cases present a good example where DNA testing is used legally. DNA testing also works best when it comes to child adoption practices. In most cases adoption happens on basis of similar ethnicity. DNA testing helps shed light on the ethnicity of a child during adoption.

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