Fact 1: Molecules of DNA are encoded with instructions that tell cells what to do.

Fact 2: DNA DNA DNA is a person's genetic fingerprint.

Given the two facts above, answer the question "What tells cells what to do?" with the following options: 
- sensory neurons
 - a person's family
 - a person's lungs
 - It helps them survive
 - a person's genetic fingerprint
 - Something coming from a gland
 - a person's skin
 - absorb light energy


 

     a person's genetic fingerprint    