ON THE EVOLUTION OF DIFFERENTIATED MULTICELLULARITY

@inproceedings{Willensdorfer2009ONTE,
  title={ON THE EVOLUTION OF DIFFERENTIATED MULTICELLULARITY},
  author={M. Willensdorfer},
  booktitle={Evolution; international journal of organic evolution},
  year={2009}
}
Most conspicuous organisms are multicellular and most multicellular organisms develop somatic cells to perform specific, nonre-productive tasks. The ubiquity of this division of labor suggests that it is highly advantageous. In this article I present a model to study the evolution of specialized cells. The model allows for unicellular and multicellular organisms that may contain somatic (terminally differentiated) cells. Cells contribute additively to a quantitative trait. The fitness of the… Expand
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47 Citations
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Citation Type

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  • A. Hallmann
  • Medicine, Biology
  • Sexual Plant Reproduction
  • 2010
TLDR
It is learned from volvocine algae that the evolutionary transition to complex, multicellular life is probably much easier to achieve than is commonly believed. Expand
Multicellularity makes somatic differentiation evolutionarily stable
TLDR
Multicellular, soma-producing strains resist invasion by nondifferentiating mutants that overtake unicellular populations, supporting the theory that somatic differentiation is stabilized by population structure imposed by multicellularity. Expand
Division of labour and the evolution of multicellularity
TLDR
A quantitative model is developed that shows that a multicellular form emerges from genetically identical unicellular ancestors when the compartmentalization of poorly compatible physiological processes into component cells of an aggregate produces a fitness advantage. Expand
Experimental evolution of multicellularity
TLDR
Experimental evolution shows that key aspects of multicellular complexity, a subject of central importance to biology, can readily evolve from unicellular eukaryotes. Expand
Multicellularity Makes Somatic Differentiation Evolutionarily Stable
TLDR
It is found that non-differentiating mutants overtake unicellular populations but are outcompeted by multicellular differentiating strains, suggesting thatMulticellularity confers evolutionary stability to somatic differentiation. Expand
A General Allometric and Life-History Model for Cellular Differentiation in the Transition to Multicellularity
TLDR
A model inspired by the volvocine green algae that explains the dynamics involved in the unicellular-multicellular transition using life-history theory and allometry is presented and it is argued that germ-soma separation may have evolved to counteract the increasing costs and requirements of larger multicellular colonies. Expand
Selection for synchronized cell division in simple multicellular organisms
TLDR
It is demonstrated that natural selection can act differently on synchronous and asynchronous cell division, and intuition for why these phenotypes are generally not neutral variants of each other is offered. Expand
The Multiple Origins of Complex Multicellularity
TLDR
Proliferation of gene families for transcription factors and cell signals accompany the key functional innovation of complex multicellular clades: differentiated cells and tissues for the bulk transport of oxygen, nutrients, and molecular signals that enable organisms to circumvent the physical limitations of diffusion. Expand
Geometry Shapes Evolution of Early Multicellularity
TLDR
To understand the selective value of increased cell death, a mathematical model of the cellular arrangement within snowflake yeast clusters is created that reveals that the mechanism of cell death and the geometry of the snowflake interact in complex, evolutionarily important ways. Expand
Experimental Evolution of Multicellular Complexity in Saccharomyces cerevisiae
TLDR
The origin and subsequent evolution of multicellular complexity in snowflake yeast can be directly attributed to natural selection. Expand
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