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Cellularization
In evolutionary biology, the term cellularization (cellularisation) has been used in theories to explain the evolution of cells, for instance in the pre-cell theory,[1][2][3] dealing with the evolution of the first cells on this planet, and in the syncytial theory[4] attempting to explain the origin of Metazoa from unicellular organisms.
Processes of cell development in multinucleate cells (syncytium, plural syncytia) of animals and plants are also termed cellularization, often called syncytium cellularization.
Key:
1 Reductive formation of organic compounds from CO or CO2 by Me-sulfur coordinative chemistry
2 tapping of various redox energy sources and formation of primitive enzymes and templates
3 elements of a transcription and translation apparatus and loose associations
4 formation of pre-cells
5 stabilised circular or linear genomes
6 cytoplasmic membranes
7 rigid murein cell walls
8 various non-murein rigid cell walls
9 glycoproteinaceous cell envelope or glycokalyx
10 cytoskeleton
11 complex chromosomes and nuclear membrane
12 cell organelles via endosymbiosis".
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