
Contents
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What Is a Flower? What Is a Flower?
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Angiosperm Phylogeny and Flower Character Evolution Angiosperm Phylogeny and Flower Character Evolution
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Genetics of Canonical Flower Development Genetics of Canonical Flower Development
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The Developmental Genetic Architecture of the Flower Bauplan The Developmental Genetic Architecture of the Flower Bauplan
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Flower Variation and Novel Flower Organ Identities Flower Variation and Novel Flower Organ Identities
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The Origin of the Bisexual Flower Developmental Type The Origin of the Bisexual Flower Developmental Type
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Perianth Evolution and the Origin of Petals Perianth Evolution and the Origin of Petals
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Genetics of Organ Identity: Challenges from Gene Duplication Genetics of Organ Identity: Challenges from Gene Duplication
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Summary and Conclusions Summary and Conclusions
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Cite
Abstract
This chapter focuses on the developmental evolution of flowers and flower organ identity. It reviews some of the most important insights that have been gained from research on the developmental evolution of flowers regarding the nature of organ identity, organ integration, and the origin of evolutionary novelties. The chapter begins with a discussion of the uniqueness of flowers and the evolution of phylogeny and flower characters in angiosperms. It then examines the genetics of canonical flower development, along with the developmental genetic architecture of the flower Bauplan. It also considers flower variation and the identities of novel flower organs, the origin of the bisexual flower developmental type, perianth evolution and the origin of petals, and the realization that additional organ identities can evolve after gene duplications.
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