How Does a Paternity Test Work?

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The Paternity test is used to establish the biological father of an individual. During a DNA Paternity test, 16 genetic locations are analysed in total.

At each of these locations on the DNA molecule, a person possesses two (of many possible) alleles at each location. The alleles are identified by a number. These alleles are inherited from the parents at conception.

One allele is inherited from the mother and one from the biological father.

You can find more information on this in the DNA Testing article: What is DNA?

During a Paternity test, the DNA profiles of the child’s mother and alleged father are laid out together, and compared to the child’s DNA profile.
In a Paternity test one of the child’s alleles (numbers) will match up with a number from the mothers sample. If the alleged father is the biological father of the child, the paternity test will show that the second number at each location on the child’s molecule will match with an allele from the father’s sample – at the same location on his DNA molecule.

If these alleles match at all locations analysed in the paternity test, then the male is included as the biological father of the child. This is because the paternity tests prove they have passed these genetic markers to the child at conception. The BioClinics vast network of DNA testing clinics offer personal case managers that can explain your chosen DNA test to you.