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Effect of DNA Testing. From the discovery of DNA testing the task of human identification and also the determination of relationships between different individuals have been made very easy. 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. Method of identifying people using blood types was used before the invention of the DNA testing method. Blood typing the means that was used for identification before invention of DNA testing was not a very concise way of identifying individuals since there only a few blood types compared to the very great number of individuals on the globe From the invention of DNA testing all fields have preferred it to other means of identification. When knowledge of using DNA for human identification came in, human identification and relationship have been discussed on the revelation that DNA is a unique molecule that can help tell people from each other.The DNA testing notion came to emphasize that DNA is a component that is a unique making also people unique from each other unlike the use of blood typing. 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. Where the samples are not identical but shows a big percentage of similarity than they most probably come from related individuals. If samples are similar to a certain extent then it denotes that the individuals have a relationship to that extent.
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Now for both criminal and legal cases DNA testing can be applied. For the two cases DNA testing is performed differently putting in regard the test being done. Verdict declaration in the investigation of crime scene matters is only declared when the DNA matches that 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. 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. 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. DNA testing also works best when it comes to child adoption practices. In most cases adoption happens on basis of similar ethnicity. Where ethnic backgrounds cannot be determined DNA testing helps to solve this.If ethnicity of a child to be adopted is not well-known DNA testing aids in determination.