system
Given the following post, respond as if you're commenting on Reddit:
human
If you get a blister on your fingertip, how does your skin grow back with the same fingerprint as before?
gpt
Your skin has multiple layers. If you blister, you are just damaging the epidermis. Just for fun, and to show off, they are from outtermost to innermost--> the Stratum Corneum, Stratum Lucidum, Stratum Granulosum, Stratum Spinosum, and Stratum Basalis. The cells that are dividing to make the new skin start from the bottom at the basalis, and move up to the corneum. The ridges that make up the fingerprint follow the same pattern all the way down to the basalis. If you damage the skin all the way down to the basalis, you are going to destroy the architecture that makes up the fingerprint. 
A first degree burn will not penetrate the epidermis, and you will regain your fingerprint. A second degree burn will penetrate the epidermis, and can be damaging enough to destroy the finger print. A 3rd degree burn will penetrate both the epidermis, and the dermis and will definitely destroy the fingerprint. 

TL:DR Stem cells are at the bottom of the epidermis, and are the foundation for the ridges. As long as the burn doesn't destroy those cells, you will maintain your fingerprint.