Figure 9
Cleavage pattern and differentiated progeny of selected daughter cells derived from 4d in the direct-developing embryos of C. convexa. In each case the 4d blastomere was injected with rhodamine green dextran at the 25-cell stage. In some cases (E,I-M,O,S-BB), specific progeny of 4d were also double labeled by injection with DiI at a later stage of development. Where appropriate, the specific injected progeny of 4d are indicated in the lower right corner of each respective panel. Specific daughter fates of these double-labeled cells are indicated in each panel. The cleavage pattern and the sublineage fates in the embryos of C. convexa are similar to that of C. fornicata (compare with Figures 1, 2, 3 and 6). Inset in V shows higher magnification view of filopodia produced by 2mL2.2. ro: right ocellus; tn: tentacles. Other structures are labeled as indicated in Figures 2 and 5. Scale bar in BB equals 50 μm for A-X, 70 μm for Y-AA, and 90 μm for BB.