PART 1: PRINCIPLES OF DEVELOPMENTAL BIOLOGY - Developmental Biology:The Anatomical Tradition - Life Cycles and the Evolution ofDevelopmental Patterns - Principles of Experimental Embryology - TheGenetic Core of Development - The Paradigm of Differential GeneExpression - Cell-Cell Communication in Development - PART 2: EARLYEMBRYONIC DEVELOPMENT - Fertilization: Beginning a New Organism - EarlyDevelopment in Selected Invertebrates - The Genetics of AxisSpecification in Drosphilia - Early Development and AxisFormation in Amphibians - The Early Development of Vertebrates: Fish,Birds and Mammals - PART 3: LATER EMBRYONIC DEVELOPMENT - The Emergenceof the Ectoderm: The Central Nervous System and the Epidermis - NeuralCrest Cells and Axonal Specificity - Paraxial and Intermediate Mesoderm- Lateral plate Mesoderm and Endoderm - Development of the Tetrapod Limb- Sex Determination - Metamorphosis, Regeneration, and Aging - The Sagaof the Germ Line - PART 4: RAMIFICATIONS OF DEVELOPMENT BIOLOGY - AnOverview of Plant Development; S.R.Singer - Medical Implicationsof Developmental Development - Environmental Regulation of AnimalDevelopment - Developmental Mechanisms of Evolutionary Change.