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Using DNA to determine paternity

Posted on in Fathers' Rights

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When a woman denies that a man is the father of her child or a man denies that he is the father of a child, a paternity test can be ordered by the court. The tests used to determine if a man is a child's father can also positively exclude a man from being the father.

The first paternity blood test looked at the blood types of the mother, father and child. This testing used the ABO blood typing system. Humans can have A, B, AB or O blood types. A mother who has Type B blood and father who has Type O blood can't have a child with AB blood. The father of the child must have A or AB blood type. Blood tests that only determine blood types can't be used to determine if a man is the father of a child, but they can be used to determine if there is a possibility that a man is the father.

Each person has unique DNA except for identical twins. Half of the genetic material a child has comes from his or her mother and half from his or her father. When a DNA test is performed on the biological father of a child, the results will be that the likelihood of paternity is 99.9 percent.

While all of this might seem a bit intimidating, the DNA testing procedure is rather simple. A swab is rubbed against the inside of the person's cheek. If you believe that you are the father of a child, a DNA test can confirm your belief. Upon a determination of paternity, you have a right to seek custody or visitation. However, you may also be ordered to pay child support. An attorney can provide you with more information about DNA testing and establishing paternity.

Source: FindLaw, "Paternity Tests: Blood Tests and DNA," accessed July 21, 2016

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