David Bourget (Western Ontario)
David Chalmers (ANU, NYU)
Rafael De Clercq
Jack Alan Reynolds
Learn more about PhilPapers
In the natural world, individual organisms can adapt as their environment changes. In most in silico evolution, however, individual organisms tend to consist of rigid solutions, with all adaptation occurring at the population level. If we are to use artificial evolving systems as a tool in understanding biology or in engineering robust and intelligent systems, however, they should be able to generate solutions with fitness-enhancing phenotypic plasticity. Here we use Avida, an established digital evolution system, to investigate the selective pressures that produce phenotypic plasticity. We witness two different types of fitness-enhancing plasticity evolve: static- execution-flow plasticity, in which the same sequence of actions produces different results depending on the environment, and dynamic-execution-flow plasticity, where organisms choose their actions based on their environment. We demonstrate that the type of plasticity that evolves depends on the environmental challenge the population faces. Finally, we compare our results to similar ones found in vastly different systems, which suggest that this phenomenon is a general feature of evolution
|Keywords||No keywords specified (fix it)|
|Categories||categorize this paper)|
|Through your library||Only published papers are available at libraries|
Similar books and articles
I. Walker (1996). Prediction of Evolution? Somatic Plasticity as a Basic, Physiological Condition for the Viability of Genetic Mutations. Acta Biotheoretica 44 (2).
Massimo Pigliucci (2004). Studying the Plasticity of Phenotypic Integration in a Model Organism. In M. Pigliucci K. Preston (ed.), The Evolutionary Biology of Complex Phenotypes. Oxford University Press.
Christina Richards, Oliver Bossdorf & Massimo Pigliucci (2010). What Role Does Heritable Epigenetic Variation Play in Phenotypic Evolution? BioScience 60 (3):232-237.
Massimo Pigliucci (2001). Phenotypic Plasticity. In C. W. Fox D. A. Roff (ed.), Evolutionary Ecology: Concepts and Case Studies.
Massimo Pigliucci, Courtney Murren & Carl Schlichting (2006). Phenotypic Plasticity and Evolution by Genetic Assimilation. Journal of Experimental Biology 209:2362-2367.
Christina Richards (2006). Jack of All Trades, Master of Some? On the Role of Phenotypic Plasticity in Plant Invasions. Ecology Letters 9:981-993.
Massimo Pigliucci (2005). Evolution of Phenotypic Plasticity: Where Are We Going Now? Trends in Ecology and Evolution 20 (9):481-486.
Added to index2009-01-28
Total downloads6 ( #160,257 of 1,008,236 )
Recent downloads (6 months)1 ( #64,735 of 1,008,236 )
How can I increase my downloads?