Fact 1: Cells that divide uncontrollably may form a tumor, or abnormal mass of cells.

Fact 2: When p53 is mutated, cells divide uncontrollably.

Given the two facts above, answer the question "If a tumor has formed, this gene might have mutated:" with the following options: 
- p53
 - SNPs
 - OCA 2
 - DNA
 - gene
 - tRNA
 - malignancy
 - TRH


 

 p53        