early development

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Across
  1. 5. production of a blastocoel in mammalian morula
  2. 6. balancing organs, modified wings
  3. 9. multinucleate cell produced by mitosis without cytokinesis
  4. 11. BMP inhibitor
  5. 12. embryo forms only from this layer of cells
  6. 14. _____ membranes separate from the embryo that enable it to survive in the egg or uterus
  7. 15. transcription factor central to development, activated by Wnt pathway
  8. 16. cleavage-stage cells
  9. 17. 16- to 64-cell stage, looks like a mulberry
  10. 20. nuclei and surrounding cytoplasm before cellularization
  11. 22. process that forms embryonic germ layers
  12. 23. point where cell division slows and embryo genes are expressed (acronym)
  13. 27. cells that will form the notochord
  14. 29. ____ genes are expressed in broad overlapping domains
  15. 31. type of cleavage in mammals
  16. 32. embryonic segments
  17. 34. gene complex in Drosophila that specifies the segmental identity of abdominal segments
  18. 35. derived from external cells in mammalian cleavage
  19. 37. avian egg type
  20. 38. a narrow tunnel in the eggshell for fertilization
  21. 39. plays an essential role in patterning the vertebrate embryo
  22. 40. protein that localizes β-catenin to future dorsal surface
Down
  1. 1. maternal effect gene expressed in anterior of Drosophila embryo
  2. 2. female germ cell
  3. 3. responsible for anterior-posterior patterning, along with FGFs and RA (acronym)
  4. 4. blastomeres form a compact ball of cells
  5. 7. gene needed for head formation
  6. 8. formed by infolding of ventral mesoderm cells (2 words)
  7. 10. term for division of cells in the early embryo
  8. 13. major structural characteristic of amniote gastrulation (2 words)
  9. 18. ventral cells that will form the trunk of the Drosophila embryo (2 words)
  10. 19. protein that suppresses caudal protein translation
  11. 21. transcription factor needed for organizer protein expression
  12. 24. central cavity in a ball of cells
  13. 25. site where amphibian gastrulation starts (2 words)
  14. 26. transcription factor that expresses eomesodermin
  15. 28. binds to Dorsal
  16. 30. receptor for gurken
  17. 33. protein that dorsalizes Drosophila embyro
  18. 34. epidermal tissue induced by this signaling molecule family (acronym)
  19. 36. initiate Xenopus blastopore involution (2 words)
  20. 41. cells located here involute into embryo (acronym)