DNA matching techniques to identify someone's father
DNA paternity testing is the use of DNA profiles to determine whether an individual is the biological parent of another individual. Paternity testing can be especially important when the rights and duties of the father are in issue and a child's paternity is in doubt. Tests can also determine the likelihood of someone being a biological grandparent. Though genetic testing is the most reliable standard, older methods also exist, including ABO blood group typing, analysis of various other proteins and enzymes, or using human leukocyte antigen antigens. The current techniques for paternity testing are using polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP). Paternity testing can now also be performed while the woman is still pregnant from a blood draw.[1][2]
DNA testing is currently the most advanced and accurate technology to determine parentage. In a DNA paternity test, the result (called the 'probability of parentage)[3][failed verification] is 0% when the alleged parent is not biologically related to the child, and the probability of parentage is typically 99.99% when the alleged parent is biologically related to the child. However, while almost all individuals have a single and distinct set of genes, rare individuals, known as "chimeras", have at least two different sets of genes, which can result in a false negative result if their reproductive tissue has a different genetic make-up from the tissue sampled for the test.[4]
^"A Non-invasive Test to Determine Paternity in Pregnancy" New England Journal of Medicine May 3, 2012
^Pollack, Andrew (June 19, 2012). "Paternity Blood Tests That Work Early in a Pregnancy". The New York Times.
^"Paternity Indices". April 19, 2004. Archived from the original on April 19, 2004.
^"Two Women Don't Match Their Kids' DNA". Abcnews.go.com. August 15, 2006. Retrieved April 3, 2010.
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[page needed] These genotypes can be used for: genealogical DNAtestingDNApaternitytestingDNA profiling phylogenetics population genetics Gel electrophoresis...
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