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dc.contributor.authorJaramillo, M. Alejandra
dc.contributor.authorKramer, Elena
dc.date.accessioned2009-02-22T22:35:19Z
dc.date.issued2007
dc.identifier.citationJaramillo, M. Alejandra and E. M. Kramer. 2007. The role of developmental genetics in understanding homology and morphological evolution in plants. International Journal of Plant Science 168(1): 61-72.en
dc.identifier.issn1058-5893en
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:2624675
dc.description.abstractHomology assessments are critical to comparative biological studies. Although gene expression data have been proposed as instrumental for defining homologous relationships, several lines of evidence suggest that this type of data can be misleading if used in isolation. The correspondence between the homology of genes and that of structures is not simple, and conclusions can be derived only after careful examination of all available data. For instance, the MADS-box gene family is one of the best-studied families of transcription factors, and it provides several examples of dissociation between genetic and morphological homology. In this regard, we examine the role of <i>APETALA3</i> and <i>PISTILLATA</i> homologs in the development of petaloid organs, a feature thought to have originated multiple times. We also consider the role of members of the <i>AGAMOUS</i> subfamily in the development of the pistil, a character that originated only once. Additionally, we discuss how serial homology makes gene co-option a very common phenomenon in plants. In spite of the multiple cases of this type of dissociation, comparative developmental genetics can yield other types of information that help assess homologies. Furthermore, comparative gene expression studies provide useful data for dissecting the origin of morphological innovations and are, therefore, key to understanding character evolution. Finally, we provide some guidelines for the critical examination of comparative gene expression data in the context of studying morphological innovations.en
dc.description.sponsorshipOrganismic and Evolutionary Biologyen
dc.language.isoen_USen
dc.publisherUniversity of Chicago Pressen
dc.relation.isversionofhttp://dx.doi.org/10.1086/509078en
dash.licenseLAA
dc.subjectplant developmental evolutionen
dc.subjectYABBY geneen
dc.subjectorthologyen
dc.subjectMADS-box genesen
dc.subjecthomologyen
dc.titleThe Role of Developmental Genetics in Understanding Homology and Morphological Evolution in Plantsen
dc.typeJournal Article
dc.description.versionVersion of Record
dc.relation.journalInternational Journal of Plant Scienceen
dash.depositing.authorKramer, Elena
dc.identifier.doi10.1086/509078*
dash.contributor.affiliatedKramer, Elena


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