Figure 4.

Characteristics 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.

Jack et al. BMC Evolutionary Biology 2008 8:293   doi:10.1186/1471-2148-8-293
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