Concept 05
Multicellular Transitions
Evolutionary changes through which cells become coordinated parts of a larger reproducing collective.
In plain language
Multicellular transitions occur when cells do more than aggregate: they coordinate growth, division of labor, reproduction, and conflict in ways that allow the collective to persist as an evolutionary individual.
Why cognition enters the story
Coordination requires cells to sense neighbors, interpret shared signals, and adjust behavior to local and collective conditions. Capacities already present in unicellular ancestors may therefore become building blocks for development and collective resilience.
In my work
Studying cognition in close unicellular relatives of animals helps connect single-cell information processing with the evolutionary emergence of multicellular regulation. Capsaspora is useful precisely because its biology sits near this conceptual boundary without being a miniature animal.
Questions to keep separate
- How do cells physically remain together?
- How is cooperation stabilized against conflict?
- How are collective states sensed and regulated?
- At what point does selection act meaningfully on the collective?