Across
- 3. transcription factor central to development, often activated by Wnt pathway
- 5. site where amphibian gastrulation starts (2 words)
- 9. multinucleate cell produced by mitosis without cytokinesis
- 10. second messenger involved in Ca+ release that initates acrosomal reaction
- 12. cleavage-stage cells
- 13. cortical granule protein forms a coating around the egg
- 14. protein that localizes β-catenin to future dorsal surface
- 16. cells that will form the notochord
- 20. must be inhibited for head to form (acronym)
- 22. plays an essential role in patterning the vertebrate embryo
- 24. point where cell division slows and embryo genes are expressed (acronym)
- 28. juxtacrine signaling protein for specification of veg2 cells
- 29. ___ genes expressed in broad overlapping domains
- 30. extracellular matrix forming a fibrous mat around egg (2 words)
- 31. initiate Xenopus blastopore involution (2 words)
- 32. process by which the identity of certain cells influences the developmental fate of surrounding cells
Down
- 1. ___cells provide transcription factors and cytoplasm for oocyte
- 2. nuclei and surrounding cytoplasm before cellularization
- 4. key gene in right-left specification
- 6. vegetal cells destined to form endoderm or mesoderm
- 7. maternal effect gene expressed in anterior of embryo
- 8. nucleus of a sperm or an egg cell
- 11. forms larval skeleton on sea urchins (2 wods)
- 15. fusion of sperm and egg
- 16. the division of cells in the early embryo
- 17. protein that ventralizes embryo
- 18. cells migrate inward over a rim or border
- 19. movement toward gradient of increasing or decreasing concentration of a particular substance
- 21. contains enzymes that digest jelly layer
- 23. process that forms embryonic germ layers
- 25. cells form hollow sphere surrounding a central cavity
- 26. a narrow tunnel in the eggshell for fertilization
- 27. balancing organs, modified wings
- 31. epidermal tissue induced by this signaling molecule family (acronym)