Fate mapping and the correspondence between fate map domains and domains of regulatory gene expression. Mon 5 Oct 4. Fashioning the pharyngula. Convergence and extension. The ectoderm, mesoderm, and endoderm form as separate layers.
Tubes develop within tubes.
Remarkable cell and tissue movements accompany vertebrate development. The Spemann organizer. Wed 7 Oct 5. The genetic encoding of anterior-posterior identity. Patterning along the AP axis.