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

2. Figure 3.14 Lens induction in amphibians

3. Figure 3.15 Schematic diagram of induction of the mouse lens

4. Figure 3.16 Feather induction in the chick

5. Figure 3.17 Regional specificity of induction in the chick

7. Figure 3.18 Genetic specificity of induction in amphibians

8. Figure 3.20 Fgf8 in the developing chick (Part 1)

9. Figure 3.20 Fgf8 in the developing chick (Part 2)

10. Figure 3.19 Structure and function of a receptor tyrosine kinase

11. Figure 3.20 Fgf8 in the developing chick

12. Figure 3.21 The widely used RTK signal transduction pathway

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

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

15. Tunicate life cycle

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

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

18. 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

19. Part Figure II.4 Conditional specification

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

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