Fig. 1From: Predator Escape: An Ecologically Realistic Scenario for the Evolutionary Origins of MulticellularityOrganisms used in this laboratory. a Unicellular yeast fixed and stained with Congo red. b Multicellular yeast fixed and stained with methylene blue. a, b are provided in the snowflake yeast lab kit. c A rotifer, of the genus Philodina, when mixed with red unicellular yeast and blue multicellular yeast, will primarily eat red unicellular yeast (visible in the rotifers’ stomach through its transparent body).Back to article page