xiii, 145 p. : ill. (some col.) / The goal of functional genomics is to elucidate the relationship between an organism's genotype and phenotype. A key characteristic of functional genomics is the use of genome-wide approaches as opposed to more traditional single-gene approaches. Genome-wide expression profiling is used to investigate the dynamic properties of transcriptomes, provides insights into how biological functions are encoded in genomes, and is an important technique in functional genomics. This dissertation describes the use of genome-wide expression profiling and other functional genomics techniques to address a variety of biological questions related to development and disease of the nervous system. Our results reveal novel and important insights into nervous system development and disease and demonstrate the power of functional genomics approaches for the study of nervous system biology. This dissertation also describes a novel technique called TUtagging that facilitates cell type-specific RNA isolation from intact complex tissues. The isolation of RNA from specific cell types within a complex tissue is a major limiting factor in the application of genome-wide expression profiling, and TU-tagging can be used to address a wide array of interesting and important biological questions. This dissertation includes previously published and unpublished co-authored material. / Committee in charge: Dr. John Postlethwait， Chair； Dr. Chris Doe， Advisor； Dr. Bruce Bowerman， Member； Dr. Patrick Phillips， Member； Dr. Tom Stevens， Outside Member

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