DNA testing is performed. DNA (DeoxyriboNucleic Acid) is the genetic material found in the cells of your body. A person receives half of their genetic material from their biological mother and the other half from their biological father. Paternity testing is performed using a technology called PCR (Polymerase Chain Reaction), in which specific areas of a person’s DNA—called genetic loci—are amplified, analyzed and compared to those of another person to determine whether they share genetic markers in common and whether they are likely to be genetically related. Non-DNA based genetic tests, such as blood typing, are no longer performed for present-day paternity and family relationship testing.
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