HomeIBDP Biology D Continuity and change IBDP Biology D Continuity and change 1. Molecules D 1.1. DNA replication Start Lesson D 1.2. Protein synthesis Start Lesson D 1.3. Mutation and gene editing Start Lesson 2. Cells D 2.1. Cell and nuclear division Start Lesson D 2.2. Gene expression Start Lesson D 2.3. Water potential Start Lesson 3. Organisms D 3.1. Reproduction Start Lesson D 3.2. Inheritance Start Lesson D 3.3. Homeostasis Start Lesson 4. Ecosystems D 4.1. Natural Selection Start Lesson D 4.2. Stability and change Start Lesson D 4.3. Climate change Start Lesson