Genetic information is your DNA, other known as deoxyribonucleic acid. It is basically your identification.
Genetic information (DNA) helps you know and understand health conditions that run in your family, as well as your risk for developing certain health conditions or having a child with certain conditions. This information can help you make healthy lifestyle choices and important life and medical decisions.
It can also be used to identify a perpetrator in a crime. There are many uses for DNA.
If this is not enough, feel free to use this link to learn more about DNA: https://en.wikipedia.org/wiki/DNA