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Experimental Embryology

Experimental Embryology. Principles. Environment and Development. How does the environment affect sex determination? in an invertebrate in a vertebrate. Environment and Development. What are morphs? Is there some adaptive benefit to this variation?. Environment and Development.

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Experimental Embryology

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  1. Experimental Embryology Principles

  2. Environment and Development • How does the environment affect sex determination? • in an invertebrate • in a vertebrate

  3. Environment and Development • What are morphs? • Is there some adaptive benefit to this variation?

  4. Environment and Development • How are developing eggs affected by UV radiation?

  5. Environment and Development • What kind of protection from the harmful effects of UV radiation exists?

  6. Environment and Development • What is the connection between photolyase and UV – B?

  7. Cell Specification • What do each of the following terms mean? • differentiation • commitment • specification • determination

  8. Cell Specification • What is autonomous specification and why does it lead to mosaic development?

  9. Cell Specification • How did Whittaker experiment confirm segregation of morphogenic determinants?

  10. Cell Specification • What is conditional specification and how does it lead to regulative development?

  11. Cell Specification • What was the germ plasm hypothesis and why was it important?

  12. Cell Specification • Testing Weissmann’s hypothesis • Roux’s experiment

  13. Cell Specification • Testing Weissmann’s hypothesis • Driesch’s experiment

  14. Cell Specification • What else did Driesch do that supported regulative development?

  15. Cell Specification • How have morphogenic gradients been used to explain regeneration of certain organisms?

  16. Cell Specification • How do gradients provide positional information in development?

  17. Cell Specification • What experimental evidence exists to demonstrate that activin is a morphogen? Xenopus

  18. Cell Specification Gurdon’s Experiments

  19. Cell Specification • What are stem cells and what forms are possible? • pluripotent • committed

  20. Cell Specification • What is syncytial specification?

  21. Morphogenesis and Cell Adhesion • What are some of the cellular processes that allow morphogenesis to take place?

  22. Morphogenesis

  23. Differential Cell Affinity • What is meant by selective affinity and how does this influence morphogenesis?

  24. Differential Cell Affinity • selective affinities change during morphogenesis

  25. Differential Cell Affinity • What is the differential adhesion hypothesis and what evidence exists to support it?

  26. Differential Cell Affinity • How do the cadherins mediate cell adhesion?

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