Widower learns that for decades, his wife hid letter about a son he never knew he had

[post_page_title]The science of paternity testing[/post_page_title]

Tests can be done to determine whether someone is the father of a child or not; they look to see whether the father’s genes are found in another human. The DNA for the test is taken by swabbing the inside of the parent and child’s cheeks using specialist cotton sticks.

GettyImages-95845554-56a8723b5f9b58b7d0f2a09b1
The science of paternity testing

The cells found on the inside of the cheek are collected once they stick onto the two different swabs, which can then be compared in a laboratory. The results are determined by whether the genes match.

Recommended For You

How to make a Twix cake

Did you know that it’s possible to turn some of your favorite chocolate bars into cakes for you and your