Animals|Animals, Genetically Modified|Binding Sites|Body Patterning|Computational Biology|DNA-Binding Proteins|Drosophila Proteins|Drosophila melanogaster|Gene Expression Profiling|Gene Expression Regulation, Developmental|Genes, Insect|Homeodomain Proteins|Models, Genetic|Mutation|Promoter Regions, Genetic|Protein Binding|RNA, Messenger|Stochastic Processes|Trans-Activators|Transcription Factors