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191 - 211
- Zusammenfsg.
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Most likely, the first cell (the urcell) originated from inanimate matter. The possibility of matter to organize itself into viable cell systems ultimately depends on its inherent ability for self-organization. Moreover, in the further course of evolution, it is certain that the procytes achieved the development of diverse basic metabolic types, whereby "horizontal gene transfer" may have played a very decisive role. The different basic metabolic types are present as compartments in the eucyte, which is probably the result of endocytobiotic events. This process of cellular evolution was and is driven and regulated through the diverse mechanisms of micro- and macroevolution. The modular principle has been recognized as an essential macromechanism of evolution. Afterwards appeared the organization of symbiosis in the widest sense- first, in symbiosis between different molecules yielding organelles, secondly, between diverse organelles resulting in bacteria cells, then between differing bacteria types giving eucytes, and finally between dissimilar eucytes to multicellular organisms. The endocytobiosis formation is consequently an important macroevolutionary mechanism in the widest sense, and therewith a significant criterion of all reconstruction attempts of cell evolution.
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