title: Patterns of engrailed and fushi tarazu transcripts reveal novel intermediate stages in Drosophila segmentation.
abstract: Transcripts of the engrailed and fushi tarazu genes in young Drosophila embryos are initially patterned in intervals larger than a single segment. The segmental pattern evolves in a stepwise sequence through successively smaller spatial units.
mesh_terms: D000818:Animals; D001345:Autoradiography; D002455:Cell Division; D002874:Chromosome Mapping; D004330:Drosophila / Q000196:embryology / Q000235:genetics*; D014158:Transcription, Genetic