JTW's Evolutionary Origins - Author: Wood, John T.
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Evolutionary Origins - Table of Contents
Metazoan Origins - Table of Contents
Hypothesis on Metazoan Origins Sequence
- Homeotic Gene / Transcription Factors
- Choanoflagellate
- Colonial Flagellata
- Cell/Substrate Adhesion Molecules (CAMs/SAMs
- Migratory Colonial Flagellata
- Nonspecifically Distributed Intra-cellular Digestion by phagocytosis
- Parenchymella
- Nonspecifically Distributed Extra-cellular Digestion by secretion of digestive enzymes into external environment
- Localized secretion of digestive enzymes into external environment by specialized cells on the periphery of the colony
- HOX gene Linkage
- Unipolar Evagination to Form Gastrula
- Diploblasts - Endoderm/Ectoderm
- Myoepithelia with Neuroid Conduction
- Two-way Nerve Net
- Atavistic Expression of Intracellularly-Digestive Phagocytes as Mesoderm
- Triploblasts - Endoderm/Mesoderm/Ectoderm
- Bilaterians - HOX Cluster Formation
Metazoan Origins - Table of Contents
Evolutionary Origins - Table of Contents
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