Animal Structures Animals Animals, Genetically Modified Article DNA binding protein DNA-Binding Proteins Drosophila Proteins Drosophila melanogaster Drosophila protein Evolution, Molecular Gene Expression Regulation, Developmental Gene Regulatory Networks Larva MIRN92 microRNA, Drosophila MicroRNAs Mutation RNA sequence Transcription Factors animal animal structures animal tissue classification controlled study convergent evolution ectopic expression embryo enhancer region exon femur gene expression