Bifurcations, harmonics and the four colour wheel model of Drosophila development

作者: BRIAN C. GOODWIN , STUART A. KAUFFMAN

DOI: 10.1016/B978-0-12-287960-9.50022-8

关键词: Polarity (physics)BiologySegment polarity geneGeneDrosophila (subgenus)Gap genePhenotypeIdentity (music)Homeotic geneGeneticsEvolutionary biology

摘要: Publisher Summary This chapter discusses the bifurcations, harmonics, and four-color-wheel model of Drosophila development. Evidence accumulated has identified at least five major sets genes that regulate two fundamental processes: (1) organization embryo into periodic segments (2) specification segment identity. The are maternal effect zygotic play a role in establishing antero-posterior, dorso-ventral axes; gap each necessary for normal development contiguous set embryo; pair-rule required overlapping double segment-spaced zones; segment-specific appear to establish boundaries proper polarity within segments; homeotic cause transformations one or its adult derivatives those another segment. pattern deletions mirror-symmetric duplications, thus, emerges as generic property process whereby spatial patterns gene products give rise segmental phenotype .

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