InvertebratesPoriferaPhylogenyEvolution, MolecularBiological EvolutionMolecular Sequence DataAmino Acid SequenceSpheroids, CellularVolvoxDictyosteliumMyxococcus xanthusModels, BiologicalCell AggregationMorphogenesisCaenorhabditis elegansCell CommunicationSignal TransductionMutationSpores, ProtozoanMyxococcalesBiofilmsPhenotypeEukaryotaGerm Cells, PlantDrosophila melanogasterGene Expression Regulation, DevelopmentalArabidopsisDrosophila ProteinsDictyosteliidaCaenorhabditis elegans ProteinsEukaryotic CellsMicrobial InteractionsCell DivisionChoanoflagellataDrosophilaSequence Homology, Amino AcidArabidopsis ProteinsGenes, ProtozoanCell DifferentiationProtozoan ProteinsCell AdhesionBase SequencePoloniumCell MovementMicroscopy, Electron, ScanningCell PolarityPhaeophytaSequence AlignmentCell Culture TechniquesChemotaxis