Abstract
Cell differentiation of Pleodorica californica was analyzed and a model was made depending on some assumptions. The most important assumption in our model is the two types of assumed fate of differentiation. One type is a fixed fate cell which differentiate into somatic or reproductive cell depending on the spatial arrangement in the cell sheat. The other type is a "fuzzy cell" of which fate of differentiation is not fixed. High coincidence between the measured and theoretical distribution of the number of reproductive cell in a cology indicates that the existence of "fuzy cell" is important in cell differentiation of Pleodorina californica.
