title: Function and expression of ultrabithorax in the Drosophila embryo.
mesh_terms: D000483:Alleles; D000818:Animals; D002874:Chromosome Mapping; D004330:Drosophila / Q000033:anatomy & histology / Q000196:embryology / Q000235:genetics*; D004625:Embryo, Nonmammalian / Q000166:cytology; D009154:Mutation; D013909:Thorax / Q000033:anatomy & histology; D014158:Transcription, Genetic