作者: BRIAN C. GOODWIN , STUART A. KAUFFMAN
DOI: 10.1016/B978-0-12-287960-9.50022-8
关键词: Polarity (physics) 、 Biology 、 Segment polarity gene 、 Gene 、 Drosophila (subgenus) 、 Gap gene 、 Phenotype 、 Identity (music) 、 Homeotic gene 、 Genetics 、 Evolutionary 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 .