Title:
Clines maintained by overdominant selection in hybrid zones

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dc.contributor.author Goodisman, Michael en_US
dc.contributor.author Crozier, Ross H. en_US
dc.contributor.corporatename University of Arizona. Dept. of Biochemistry and Molecular Biophysics en_US
dc.contributor.corporatename La Trobe University. Dept. of Genetics en_US
dc.contributor.corporatename James Cook University. Dept. Of Zoology and Tropical Ecology en_US
dc.date.accessioned 2012-03-23T20:10:57Z
dc.date.available 2012-03-23T20:10:57Z
dc.date.issued 2001
dc.description.abstract Hybrid zone models often consider environment-independent selection to operate against all hybrids. However, empirical studies suggest that hybrids may be as fit or fitter than the hybridizing parental taxa in some environments. In this study we develop a novel mathematical model to explore the effects of one form of hybrid superiority on the genetic structure of hybrid zones. Our primary goals were to investigate the allele frequency· clines at a locus experiencing overdominant selection and at a linked neutral or underdominant locus. Our results indicate that overdominant selection results in flat equilibrium allele frequency clines throughout the hybrid zone and an excess of heterozygosity relative to Hardy-Weinberg equilibrium. However, the genetic clines at linked neutral or underdominant loci tend no( to reflect this overdominance even when the loci are tightly linked. Overall, we conclude that overdominance is unlikely to be detected in genetic surveys unless many loci are assayed. en_US
dc.identifier.citation Goodisman MAD and Crozier RH. 2001. Clines maintained by overdominant selection in hybrid zones. Hereditas. 134:161-169. en_US
dc.identifier.issn 0018-0661
dc.identifier.uri http://hdl.handle.net/1853/43087
dc.language.iso en_US en
dc.publisher Georgia Institute of Technology en_US
dc.publisher.original Mendelian Society of Lund en_US
dc.subject Clines en_US
dc.subject Genetically differentiated populations en_US
dc.subject Hybrid zones en_US
dc.subject Gradient analysis en_US
dc.title Clines maintained by overdominant selection in hybrid zones en_US
dc.type Text
dc.type.genre Article
dspace.entity.type Publication
local.contributor.author Goodisman, Michael
local.contributor.corporatename College of Sciences
local.contributor.corporatename School of Biological Sciences
relation.isAuthorOfPublication 2faca532-8efe-4121-8aa0-1e72157324ce
relation.isOrgUnitOfPublication 85042be6-2d68-4e07-b384-e1f908fae48a
relation.isOrgUnitOfPublication c8b3bd08-9989-40d3-afe3-e0ad8d5c72b5
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