Figure 3.13 Ectodermal competence and the ability to respond to the optic vesicle inducer in Xenopus

Figure 3.14 Lens induction in amphibians

Figure 3.15 Schematic diagram of induction of the mouse lens

Figure 3.16 Feather induction in the chick

Figure 3.17 Regional specificity of induction in the chick

Figure 3.18 Genetic specificity of induction in amphibians

Figure 3.20 Fgf8 in the developing chick (Part 1)

Figure 3.20 Fgf8 in the developing chick (Part 2)

Figure 3.19 Structure and function of a receptor tyrosine kinase

Figure 3.20 Fgf8 in the developing chick

Figure 3.21 The widely used RTK signal transduction pathway

Figure 3.22 Activation of MITF transcription factor through the binding of stem cell factor by the Kit RTK protein (Part 2)

Figure 3.22 Activation of MITF transcription factor through the binding of stem cell factor by the Kit RTK protein (Part 1)

Tunicate life cycle

Part Figure II.2 Autonomous specification in the early tunicate embyro (Part 1)

Part Figure II.2 Autonomous specification in the early tunicate embyro (Part 2)

Part Figure II.3 Microsurgery on tunicate eggs forces some of the yellow crescent cytoplasm of the muscle-forming B4.1 blastomeres to enter the b4.2 blastomere pair

Part Figure II.4 Conditional specification

Part Figure II.6 Roux’s attempt to demostrate autonomous specification

Part Figure II.7 Driesch’s demonstration of conditional specification