Study of individual bacteria in various ways has established that a bacterial culture which is genetically homogeneous and grown in homogeneous nutrient conditions nevertheless produces characteristically different individuals. These individuals retain their properties throughout their life cycle, showing that the individuality is not a momentary effect of random chance bombardments by a fluctuating environment. Moreover, the individuality is not a function of position in the cell division cycle (Spudich & Koshland, Nature, 1976). Anno 2012, people looked at multicellulars. Epigenetics = Non-Genetic Individuality.  We are all individuals !