Developmental Biology

  1. Early Embryonic Development
    1. Cleavage
      1. Characteristics
        1. Rapid Cell Cycles
          1. No Growth Phase
            1. Maternal Control
            2. Cleavage Patterns
              1. Holoblastic Cleavage
                1. Radial Cleavage
                  1. Spiral Cleavage
                    1. Bilateral Cleavage
                    2. Meroblastic Cleavage
                      1. Discoidal Cleavage
                        1. Superficial Cleavage
                      2. Cleavage Regulation
                        1. Plane Determination
                          1. Spindle Positioning
                            1. Cell Cycle Control
                            2. Mid-Blastula Transition
                              1. Zygotic Gene Activation
                                1. Cell Cycle Lengthening
                                  1. Motility Onset
                                  2. Blastula Formation
                                    1. Blastocoel Development
                                      1. Cell Fate Specification
                                        1. Maternal-Zygotic Transition
                                      2. Gastrulation
                                        1. Germ Layer Formation
                                          1. Ectoderm
                                            1. Neural Fate
                                              1. Epidermal Fate
                                              2. Mesoderm
                                                1. Axial Mesoderm
                                                  1. Paraxial Mesoderm
                                                    1. Intermediate Mesoderm
                                                      1. Lateral Plate Mesoderm
                                                      2. Endoderm
                                                        1. Foregut
                                                          1. Midgut
                                                            1. Hindgut
                                                          2. Cellular Movements
                                                            1. Invagination
                                                              1. Involution
                                                                1. Ingression
                                                                  1. Delamination
                                                                    1. Epiboly
                                                                      1. Convergent Extension
                                                                      2. Molecular Control
                                                                        1. Signaling Pathways
                                                                          1. Transcription Factors
                                                                            1. Cell Adhesion Changes
                                                                            2. Species-Specific Gastrulation
                                                                              1. Sea Urchin Gastrulation
                                                                                1. Drosophila Gastrulation
                                                                                  1. Amphibian Gastrulation
                                                                                    1. Avian Gastrulation
                                                                                      1. Mammalian Gastrulation

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                                                                                  2. Gametogenesis and Fertilization

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                                                                                  4. Body Axis Formation and Patterning