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Evolvability Suppression to Stabilize Far-Sighted Adaptations
 

Summary: Evolvability Suppression to Stabilize Far-Sighted
Adaptations
Lee Altenberg
Information and Computer Sciences, University of Hawai`i at Manoa,
Honolulu, HI U.S.A.
(808) 875-0745, Internet: altenber@hawaii.edu
Keywords: evolvability, metapopulation, hierarchies, cheats, far-sighted 1
Abstract
The opportunistic character of adaptation through natural selection can lead to
`evolutionary pathologies'--situations in which traits evolve that promote the ex-
tinction of the population. Such pathologies include imprudent predation and other
forms of habitat over-exploitation or the `tragedy of the commons', adaptation to
temporally unreliable resources, cheating and other antisocial behavior, infectious
pathogen carrier states, parthenogenesis, and cancer, an intra-organismal evolu-
tionary pathology. It is known that hierarchical population dynamics can protect a
population from invasion by pathological genes. Can it also alter the genotype so
as to prevent the generation of such genes in the first place, i.e. suppress the evolv-
ability of evolutionary pathologies? A model is constructed in which one locus
controls the expression of the pathological trait, and a series of modifier loci exist
which can prevent the expression of this trait. It is found that multiple `evolvabil-

  

Source: Altenberg, Lee - Department of Information and Computer Science, University of Hawai'i at Manoa

 

Collections: Computer Technologies and Information Sciences