The transition from single to multicelled organisms may have started with the specialization of cells in colonies.

Question

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Some scientists believe that the evolution of multicellular organisms began with the specialization of cells in colonies, eventually leading to the development of true multicellularity. This theory is supported by the fact that many modern single-celled organisms, such as slime molds and choanoflagellates, exhibit some degree of cell specialization and cooperation.

The Transition from Single to Multicelled Organisms May Have Started