Gene or accession: CG12047 Gene annotation error Gene CG12047 corresponds to FBgn0002873 Comments: As described in PNAS 97:8122 , the mushroom body defect (mud) gene (FBgn0002873) occupies most of the the genome currently assigned to CG12047. The intron-exon boundaries observed in mud cDNAs (detailed in GenBank AF174134 and AF209068) differ significantly from those annotated in the GenBank submission for CG12047. Most importantly, the GadFly CG12047 omits the exon that we believe starts the gene and includes instead exons (those of cDNA GM07807) that appear to belong to a separate gene.