Chapter 35: Cell Cycle, Multicellularity, and Development

The cell cycle (G1, S, G2, M phases) provides the fundamental unit of carrier reproduction. Multicellularity is formalized as a categorical colimit of cooperative cells, while animal development—gastrulation, organogenesis, tissue differentiation—elaborates the consumer sector’s morphogenesis beyond Part IV’s general treatment. The differentiation hierarchy from totipotent to multipotent stem cells is recast as a refinement tower.