1. Know:.patterns of cleavage.sequence of events from fertilization – blastula – gastrula – adult organism. Types of movement during gastrulation. Cleavage in sea urchin. Autonomous specification x conditional specification in sea urchin and C. elegans

2. 8.3 Summary of the main patterns of cleavage (Part 1)

3. 8.3 Summary of the main patterns of cleavage (Part 2)

4. 8.4 Types of cell movements during gastrulation

5. 8.5 Axes of a bilaterally symmetrical animal

6. 8.6 Cleavage in the sea urchin

7. 8.7 Cleavage in live embryos of the sea urchin Lytechinus variegatus, seen from the side

8. 8.8 Fate map and cell lineage of the sea urchin Strongylocentrotus purpuratus (Part 1)

9. 8.9 Ability of the micromeres to induce presumptive ectodermal cells to acquire other fates

10. 8.10 Ability of the micromeres to induce a secondary axis in sea urchin embryos

11. 8.11 The role of  -catenin in specifying the vegetal cells of the sea urchin embryo;  -catenin is stained by a fluorescently labeled antibody

12. 8.13 A model of endoderm specification (Part 1)

13. 8.13 A model of endoderm specification (Part 2)

14. 8.13 A model of endoderm specification (Part 3)

15. 8.14 Normal sea urchin development, following the fate of the cellular layers of the blastula (Part 1)

16. 8.14 Normal sea urchin development, following the fate of the cellular layers of the blastula (Part 2)

17. 8.16 Ingression of primary mesenchyme cells (Part 1)

18. 8.19 Invagination of the vegetal plate (Part 2)

19. 8.20 Cell rearrangement during the extension of the archenteron in sea urchin embryos

20. 8.22 The imaginal rudiment growing in the left side of the pluteus larva of a sea urchin

21. 8.42 The nematode Caenorhabditis elegans (Part 1)

22. 8.42 The nematode Caenorhabditis elegans (Part 2)

23. 8.42 The nematode Caenorhabditis elegans (Part 3)

24. 8.43 PAR proteins and the establishment of polarity (Part 1)

25. 8.43 PAR proteins and the establishment of polarity (Part 2)

26. 8.44 Segregation of the P-granules into the germ line lineage of the C. elegans embryo

27. 8.45 Deficiencies of intestine and pharynx in skn-1 mutants of C. elegans

28. 8.46 Isolation and recombination experiments show that cell-cell interactions are required for the EMS cell to form intestinal lineage determinants

29. 8.47 Cell-cell signaling in the 4-cell embryo of C. elegans

30. 8.48 Gastrulation in C. elegans