Well, if you believe in creationism or intelligent design then stop reading right here.
Scientists from The Institute of Advanced Studies at Princeton and the University of California discovered that the underlying process in tumor formation is the same as for life itself – evolution. After analyzing a half million gene mutations, the researchers found that although different gene mutations control different cancer pathways, each pathway was controlled by only one set of gene mutations. This suggests that a molecular “survival of the fittest” scenario plays out in every living creature as gene mutations strive for ultimate survival through cancerous tumors. This finding, which appears in the August 2008 issue of The FASEB Journal (http://www.fasebj.org), improves our understanding of how evolution shapes life in all forms, while laying a foundation for new cancer drugs and treatments.