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Effect of DNA Testing.

History of DNA testing is rated approximately #% years ago, it has been used in human identification and establishing relationships present among different individuals. Apart from establishing a relationship between two people DNA has also helped determine the nature of relationship between the individuals. When it comes to identifying individuals body cells whether dead or alive can be used to identify an individual. Basically using only a piece of human hair one can tell the gender of the owner as well as 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. From the time DNA testing came all fields have registered attention when it comes to this issue 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. 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. If samples are similar to a certain extent then it denotes that the individuals have a relationship to that extent.
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Nowadays DNA testing is used to settle both criminal and non-criminal cases. 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. DNA testing is the best option in cases where full identity of an individual cannot be unearthed or when a board like the immigration board want to relate the given details to the documented details. Also the ethnicity of individuals involved 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.

Also when it comes to child adoption practices DNA testing helps a great deal. In most cases adoption happens on basis of similar ethnicity. DNA testing helps shed light on the ethnicity of a child during adoption.