Figure 4From: Segregate or cooperate- a study of the interaction between two species of DictyosteliumCharacteristics used to determine Dictyostelium phenotype. D. discoideum is characterized by having a basal disc; thick, straight stalk, and white/clear sorus. D. purpureum is characterized by its lack of basal disc; thin, wavy stalk; and purple sorus.Back to article page