Figure 4
Expression of Glomeris hairy-1 , odd-paired , odd-skipped , sloppy-paired and pairberry-1. Expression of hairy-1 (h1) (A-C), odd-paired (opa) (D-F), odd-skipped (odd) (G-I), sloppy-paired (slp) (J-L) and pairberry-1 (pby-1) (M-O). (A) Stage 1.1 embryo. Arrow points to antennal segment that does not express h1 at this stage. Asterisk marks weaker expression near the ventral midline. (B) Stage 1.2 embryo. Asterisk as in (A). Note that the segmental expression proceeds into the extra-embryonic tissue (filled circle). Enhanced patch-like expression in the central nervous system (CNS) (arrowhead), the ocular region (oc) and the antennal segment (arrow). (C) Stage 3 embryo. Segmental stripes are restricted to dorsal tissue (arrow). Dotted expression in the CNS (arrowhead) and in the anal valves (asterisk). (D) Stage 1.2 embryo. (E) Stage 2 embryo. Expression is dis-continuous in the anterior segments (arrow). (F) Stage 3 embryo. Note that expression is restricted to ventral tissue only. (G) Stage 2 embryo. Asterisk marks dynamic expression in the SAZ. Arrowhead points to dorsal segmental stripes. White arrow points to ventral segmental stripes. Black arrow points to expression in the proctodaeum. (H) Stage 3 embryo. Note the transformation of the SAZ-expression (asterisk in (G)) into dorsal patches (asterisk in H) in parallel with a clearance of expression from the SAZ. Arrows and arrowhead as in (G). (I) Stage 4 embryo. Transformation of the dorsal patches (asterisk in (H)) into a dorsal stripe (asterisk in (I)). Arrows and arrowhead as in (G) and (H). (J) Stage 1.1 embryo. (K) Stage 1.2 embryo. (L) Stage 4 embryo. Segmental expression is reduced to the ventral midline (arrow), the ventral part of the appendages and small segmental domains in the CNS (arrowhead). (M) Stage 2 embryo. Note that expression does not extend into the appendage buds, except for the mandibles (black arrow). (N) Stage 3 embryo. Enhanced expression in the CNS (white arrow). Black arrow as in (M). (O) Stage 4 embryo. Arrows as in (N). Anterior is to the left in all pictures. Abbreviations as in Figure 2. Additional abbreviations: av, anal valves; S, stomodaeum