early development FA19

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