Understanding DNA Test Results - Example of Exclusion

 

In cases of DNA paternity testing, each person has two genetic markers for each locus, and are represented by numbers. The child inherited one genetic marker from the mother, and one genetic marker from the father. If the Paternity Index for a particular locus is not zero, there would be a possible match between the alleged father and the child to be tested. The Combined Paternity Index (CPI) is calculated by the product of all loci to be tested between individuals. If the CPI is zero, the alleged father would be excluded as the biological father of the child.

The sample DNA test result report below is for demonistration purposes only.

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