1. INTRODUCTION

2. OBSERVATIONS
2.1. The COMBO-17+4 Survey
2.2. Data
2.3. Data Analysis

3. METHODS

4. EVOLUTION OF THE COLOUR BIMODALITY
4.1. Rest-Frame Colours and Colour Errors as a Function of Redshift
4.2. Colour Bimodality and the Emergence of the Red Sequence
4.3. Evolution of the Colour-Magnitude Relation

5. EVOLUTION OF THE RED-SEQUENCE GALAXY POPULATION
5.1. Colour-Magnitude Diagrams
5.2. Colour-Stellar Mass Diagrams
5.3. Number Density Evolution of Massive Red Galaxies
5.4. Stellar Mass Density Evolution of Massive Galaxies

6. SUMMARY AND CONCLUSION