Okay kiddo, do you know what DNA is? It's like a special code that tells your body how to grow and work properly. It's like a recipe book for your body!
Now, let's say you have a daddy, but you're not sure if he's your real daddy. That's where DNA testing comes in! They take a special kind of test where they look at your DNA and your daddy's DNA.
They're looking for something called "markers" which are little clues in your DNA recipe book that show whether someone is related to you or not. It's like finding a secret code that matches between you and your daddy.
If they find enough matches between your DNA and your daddy's DNA, then they know for sure that he is your daddy!
It's a really important test because knowing who your real daddy is can sometimes help you make important decisions about health, family, and even sometimes money!