What is paternity testing? Paternity testing is a DNA exam that is done to determine if a man is the biological father of a child. In order for the test to work, a DNA sample must be taken from the father in question, as well as one from the child. Once the lab receives the samples, they can start the testing process. Most companies use buccal swabs to test DNA. If you are using one of these, you will have to swab the inside of your cheek. The lab will use the two swabs to compare DNA and see whether or not there is a paternal link.

Most paternity tests use the Polymerase Chain Reaction to analyze DNA. They start by isolating the pure DNA from the sample. In order to do this, they have to remove all of the protein that is within the cell. Then, they inspect the locations of each individual DNA sample. Humans have two copies of each chromosome, so DNA experts have to do two readings for each of the locations they test.

After the testing is finished, they compare the DNA locations. Each person has two different numbers. One of the child’s numbers has to match one of the mom’s numbers and the other has to match one of the dad’s numbers. If the numbers match, a paternity index is created. This index determines how often a match occurs in a specific race. It shows the likelihood that a person is the biological father. One location is not enough to be conclusive. Therefore, DNA experts will test multiple different locations.

If the child is male, paternity tests can compare the Y chromosome because it is passed directly from father to son. Paternity testing is usually done so it can be used in the court of law. It can play a part in child support, social welfare benefits, inheritance and immigration. Not only that, but it can also be used for adoption purposes. The tests have to be conducted by a third-party professional who has no relation to any of the people who are being tested.