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Even single-cell organisms must respond to environmental challenges, which necessitated the development of signal-transduction mechanisms. The evolution of multicellular organisms required the evolution of cell-to-cell communication within the organism to coordinate between cells activities ranging from the induction of embryonic…
The successful transition from single cells to complex multicellular organisms has required the development of mechanisms for cells to communicate with each other, so as to act in concert during processes such as nutrient acquisition, motility, and defense. The most…