DNA is found in all known living organisms, from complex animals like chimpanzees and humans, to singlecelled organisms like plankton in the oceans. All living organisms also share some amount of DNA, although similar organisms would share more. Humans share 95% DNA with chimpanzees, but surprisingly around 50% with bananas. We also share 15% with rice, 11% with yeast, 2% with E. Coli.