Algorithms|Animals|Artificial Intelligence|Cluster Analysis|Computational Biology|Databases, Genetic|Drosophila melanogaster|Embryo, Nonmammalian|Gene Expression|Gene Expression Profiling|Gene Regulatory Networks|Genes, Developmental|Genes, Insect|In Situ Hybridization|Nucleic Acid Hybridization|Oligonucleotide Array Sequence Analysis