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Drosophila melanogaster

Drosophila melanogaster. Dorsal. Posterior. Anterior. Ventral. Cleavage in the Drosophila Embryo. Embryo. A. P. Larva. A. P. P. A. 2 hrs. A. P. 10 hrs. A. P. A. P. Genetic Hierarchy in A-P Axis Specification. Immunostaining. Dye-conjugated antibody. Protein.

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Drosophila melanogaster

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  1. Drosophila melanogaster

  2. Dorsal Posterior Anterior Ventral

  3. Cleavage in the Drosophila Embryo

  4. Embryo A P Larva A P

  5. P A 2 hrs. A P 10 hrs.

  6. A P A P

  7. Genetic Hierarchy in A-P Axis Specification

  8. Immunostaining Dye-conjugated antibody Protein

  9. Mutant Phenotypes for Maternal-Effect Genes

  10. Bicoid mRNA/Protein Distribution

  11. Bicoid is Sufficient for Anterior Structure Formation

  12. Bicoid Hunchback (hb) Promoter

  13. Gap Gene Expression Patterns

  14. Bicoid Controls Hunchback (hb) Expression

  15. Pair-rule Gene Expression Pattern in Syncytial/Cellular Blstoderm 14 13 12 1 11 2 3 10 4 9 5 8 6 7 Parasegments Eve = Blue Ftz = Brown

  16. Eve Gene regulation

  17. Eve Stripe 2 (parasegment 3) Regulatory Region

  18. Segment Polarity

  19. Segment Polarity Genes Engrailed (en) Gene Expression

  20. Wild Type wg mutant segment

  21. Homeotic (Hox) Genes

  22. Homeotic (Hox) Genes

  23. Antennapedia

  24. Homeodomain (Hox) Transcription Factors

  25. Homeotic (Hox) Genes

  26. Synpolydactyl Phenotype HoxD13 mutation

  27. Extra-embryonic tissue Dorsal ectoderm (epidermis) Ventral ectoderm (nervous system) Mesoderm

  28. Nuclear Localization of Dorsal Protein

  29. Neural Tube Dorsal Ventral

  30. Neuron Specification Shh = Sonic hedgegog (signal molecule)

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