Figure 9From: Expression of pair rule gene orthologs in the blastoderm of a myriapod: evidence for pair rule-like mechanisms?Schematic summary of PRG expression in the Glomeris blastoderm. (A) Early expression at the blastoderm stage. Note that the most anterior expression domain of h1 and the expression of pby-1 in the SAZ appear slightly later at stage 0.1. (B) Segmental expression at later stages. Double-headed arrows indicate splitting of initial double- (or triple-) segment wide expression domains into segmental stripes. Single-headed arrows indicate refinement of broad expression domains into a single segmental stripe of expression. Abbreviations: an, antennal segment; dyn., dynamic expression; eve, even-skipped; h1, hairy-1; md, mandibular segment; mx, maxillary segment; oc, ocular field; opa, odd-paired; pby-1, pairberry-1; pmd, premandibular segment; pmx, postmaxillary segment; pre-oc, pre-ocular region; run, runt; SAZ, segment addition zone; slp, sloppy paired; st, stage; T1-T2, first and second trunk segment. The grey bar indicates expression of the molecular landmark collier.Back to article page