ON THE EVOLUTION OF DIFFERENTIATED MULTICELLULARITY
@inproceedings{Willensdorfer2009ONTE, title={ON THE EVOLUTION OF DIFFERENTIATED MULTICELLULARITY}, author={Martin 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…
45 Citations
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References
SHOWING 1-10 OF 37 REFERENCES
Organism size promotes the evolution of specialized cells in multicellular digital organisms
- BiologyJournal of evolutionary biology
- 2008
The simulations show that the transition to specialized cells happens faster in organism composed of many cells than in organisms composed of few cells, indicating that large organisms suffer less from temporarily unsuccessful evolutionary experiments with individual cells, allowing them to evolve specialized cells via evolutionary trajectories that are unavailable to smaller organisms.
Evolution of individuality during the transition from unicellular to multicellular life
- BiologyProceedings of the National Academy of Sciences
- 2007
The hypothesis is that fitness tradeoffs drive the transition of a cell group into a multicellular individual through the evolution of cells specialized at reproductive and vegetative functions of the group.
The Evolution of Soma in the Volvocales
- BiologyThe American Naturalist
- 1994
The allometry of soma and germ supports the idea that soma functions to provide functional flagella during the embryogenesis of large colonies (Volvocaceae), and suggests that the cell wall is a preadaptation for the evolution of large multicellular colonies with deterministic development.
Cooperation and conflict in the evolution of multicellularity
- BiologyHeredity
- 2001
This paper studies conflict mediation, the process by which genetic modifiers evolve that enhance cooperation by altering the parameters of development or rules of formation of cell groups, and is particularly interested in the conditions under which these modifiers lead to a new higher-level unit of selection.
Evolution of novel cooperative swarming in the bacterium Myxococcus xanthus
- BiologyNature
- 2003
The evolution of novel cooperative behaviour in experimental lineages of the bacterium Myxococcus xanthus is reported, showing that fundamental transitions to primitive cooperation can readily occur in bacteria.
Development in Myxococcus xanthus involves differentiation into two cell types, peripheral rods and spores
- BiologyJournal of bacteriology
- 1991
The description of a second, late developmental cell type (in addition to spores) opens an entirely new line of investigation in M. xanthus, i.e., the regulation of the differentiation of vegetatively growing cells into two cell types that differ significantly in biology, shape, and localization within the population.
Cooperation and Conflict in the Evolution of Individuality. I. Multilevel Selection of the Organism
- BiologyThe American Naturalist
- 1997
The transition in evolution from cells to multicellular organisms is studied andsex serves to maintain higher levels of cooperation and lower levels of within-organism change, and fixed size may help organisms reduce conflict among cells.
Proportionality in the pattern of differentiation of the cellular slime mould Dictyostelium discoideum and the time of its determination.
- BiologyJournal of embryology and experimental morphology
- 1975
It is suggested that the axial inhomogeneities seen in the slug are not directly related to the terminal pattern of differentiation of the fruiting body as has been previously suggested.
The group covariance effect and fitness trade-offs during evolutionary transitions in individuality.
- BiologyProceedings of the National Academy of Sciences of the United States of America
- 2006
This study shows that the fitness of the group is augmented over the average fitness of its members according to a covariance effect, which appears to be one of the first emergent properties of the Group and a general aspect of groups with multiplicative properties that are themselves averages of properties of lower-level units.