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the trade-off between symmetry and asymmetry

Published online by Cambridge University Press:  26 September 2005

michael c. corballis
michael c. corballis
Affiliation:
department of psychology, university of auckland, private bag 92019, auckland 1001, new zealandm.corballis@auckland.ac.nz http://www.psych.auckland.ac.nz
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Abstract

population-level asymmetry may be maintained, not by an “evolutionarily stable strategy” pitting a dominant bias against its nondominant opposite, but rather by a genetically based system pitting a directional bias against the absence of any such bias. stability is then achieved through a heterozygotic advantage, maintaining balanced polymorphism. this model may better capture the fundamental trade-off between lateralization and bilateral symmetry.

Type
open peer commentary
Information
Behavioral and Brain Sciences , Volume 28 , Issue 4 , August 2005 , pp. 594 - 595
Copyright
2005 cambridge university press

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