General introduction.- 1. Female meiotic cell cycle.- 2. Genesis and meiosis in drosophila females.- 3. Cell cycle regulation of Drosophila female meiosis.- 4. Mutations in grauzone (grau) and cortex(cort) block progression of drosophila female meiosis and cause other defects.- 5. Goals and significance of this dissertation research.- Mapping of drosophila mutations using site-specific male recombination.- 1. Introduction.- 2. Materials and Methods.- 3. Results.- 4. Discussion.- Completion of meiosis in drosophila oocytes requires transcriptional control by grauzone, a new zinc finger protein.- 1. Introduction.- 2. Experimental Procedures.- 3. Results.- 4. Discussion.- 5. Acknowledgements.- Conclusions and Considerations.- 1. Drosophila as a model to study regulation of female meiotic cell cycle.- 2. Grau and cort are two members of a new pathway that regulates the meiotic cell cycle machinery in drosophila females.- 3. Male recombination mapping is a general method to map drosophila autosomal mutations.- References.