This piece is from Uncommon Descent. Don't be alarmed. It is a good description of methylation of DNA. Ignore the fundimentalist theory as you wish. The issue remains however: Was epigenetics present at the start of life or did it evolve? How did early one-celled organisms protect themselves from sudden threats and changes, if it were not present from the beginning?-http://darwins-god.blogspot.com/2010/11/allele-specific-dna-methylation-and.html