Simulation modeling of the origin of multicellular animals

A simulation model of the evolution of a free-living bilayered animal is proposed. The model object developed two layers of cells. The inner layer was able to produce digestive enzymes, to split and absorb organic substances. The evolution of these model objects was accompanied by mutations resembli...

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Bibliographic Details
Published in:Paleontological journal 2008, Vol.42 (2), p.105-113
Main Authors: Menshutkin, V. V., Natochin, Yu. V.
Format: Article
Language:English
Subjects:
Adaptation
Cells
Coelenterates
Digestive enzymes
Earth Sciences
Evolution
Fermentation
Modelling
Mutation
Paleontology
Secretion
Simulation
Simulation models
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Summary:A simulation model of the evolution of a free-living bilayered animal is proposed. The model object developed two layers of cells. The inner layer was able to produce digestive enzymes, to split and absorb organic substances. The evolution of these model objects was accompanied by mutations resembling real adaptations in some coelenterates and placozoans. It was observed that the outer layer of the model produced cells capable of secretion of digestive ferments. This mutation was a principal apomorphy leading to the appearance of organisms with extraorganismal digestion. Visual Basic and STELLA modeling software were used for simulations.
ISSN:0031-0301
1555-6174
DOI:10.1134/S0031030108020019