Hemiplasy and homoplasy in the karyotypic phylogenies of mammals

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dc.contributor.authorRobinson T.J.
dc.contributor.authorRuiz-Herrera A.
dc.contributor.authorAvise J.C.
dc.date.accessioned2011-05-15T16:02:19Z
dc.date.available2011-05-15T16:02:19Z
dc.date.issued2008
dc.description.abstractPhylogenetic reconstructions are often plagued by difficulties in distinguishing phylogenetic signal (due to shared ancestry) from phylogenetic noise or homoplasy (due to character-state convergences or reversals). We use a new interpretive hypothesis, termed hemiplasy, to show how random lineage sorting might account for specific instances of seeming "phylogenetic discordance" among different chromosomal traits, or between karyotypic features and probable species phylogenies. We posit that hemiplasy is generally less likely for underdominant chromosomal polymorphisms (i.e., those with heterozygous disadvantage) than for neutral polymorphisms or especially for overdominant rearrangements (which should tend to be longer-lived), and we illustrate this concept by using examples from chiropterans and afrotherians. Chromosomal states are especially powerful in phylogenetic reconstructions because they offer strong signatures of common ancestry, but their evolutionary interpretations remain fully subject to the principles of cladistics and the potential complications of hemiplasy. © 2008 by The National Academy of Sciences of the USA.
dc.description.versionArticle
dc.identifier.citationProceedings of the National Academy of Sciences of the United States of America
dc.identifier.citation105
dc.identifier.citation38
dc.identifier.issn278424
dc.identifier.other10.1073/pnas.0807433105
dc.identifier.urihttp://hdl.handle.net/10019.1/12415
dc.subjectDNA
dc.subjectarticle
dc.subjectchromosome analysis
dc.subjectchromosome map
dc.subjectDNA polymorphism
dc.subjectgene locus
dc.subjectgene rearrangement
dc.subjectgene sequence
dc.subjectgenetic conservation
dc.subjectgenetic linkage
dc.subjecthemiplasy
dc.subjectheterozygosity
dc.subjecthomoplasy
dc.subjecthuman
dc.subjectkaryotyping
dc.subjectnonhuman
dc.subjectphylogeny
dc.subjectpriority journal
dc.subjectAfrotheria
dc.subjectChiroptera
dc.subjectMammalia
dc.titleHemiplasy and homoplasy in the karyotypic phylogenies of mammals
dc.typeArticle
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