Across
- 1. mammalian version of a bastula
- 4. brings together the nuclei of sperm and egg
- 6. a set of bilaterally paired blocks of paraxial mesoderm
- 8. hollow ball of cells
- 9. transforms the blastula into a gastrula
- 10. general territorial diagrams of embryonic developement
- 11. stored nutrients
- 12. resists the entry of additional sperm
- 15. site of early formation of blood cells
Down
- 2. outer epithelium of the blastocyst
- 3. site where the polar bodies of oogenesis are budded from the cell
- 5. period of rapid cell division without growth
- 7. organs of the animal body develop from specific portions of the three embryonic germ layers
- 13. organisms that have an amniotic egg
- 14. runs along the anterior-posterior axis of the embryo