Animal Development

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Across
  1. 4. the process of cell specialization in the structure and function
  2. 6. organs of animal body develop from specific portions of the three embryonic germ layers
  3. 8. a period of rapid cell division without growth, which results in the production of a large number of cells called blatomeres
  4. 9. rearrangements responsible for changes in both the shape and position of cells
  5. 10. Transforms the blastula into a gastrula, which has primitive digestive cavity and three embryotic germ layers
Down
  1. 1. Cleavage planes usually follow a specific pattern relative to the animal and _________ of the zygote.
  2. 2. Brings together the nuclei of sperm and egg, forming a diploid zygote, and activates the egg, initiating embryonic development
  3. 3. Cell adhesion molecules such as ____ help hold cells together in tissues.
  4. 5. is triggered when the sperm meets the egg, releases hydrolytic enzymes that digest material surrounding the egg
  5. 7. Fibronectin and other ________ located on cell services are important for cell migration and appear to affect cadherin function