A - Unity and Diversity
B - Form and Function
C - Interaction and Interdependence
D - Continuity and Change
D1.1 DNA replication
D1.2 Protein synthesis
D1.3 Mutations and gene editing
D2.1 Cell and nuclear division
D2.2 Gene expression (HL)
D2.3 Water potential
D3.1 Reproduction
D3.2 Inheritance
D3.3 Homeostasis
D4.1 Natural selection
D4.2 Sustainability and change
D4.3 Climate change
View a summary cheatsheet for D3.1 Reproduction
D3.1.1 Differences between sexual and asexual reproduction
D3.1.2 Role of meiosis and fusion of gametes in the sexual life cycle
D3.1.3 Differences between male and female sexes in sexual reproduction
D3.1.4 Anatomy of the human male and female reproductive systems
D3.1.5 Changes during the ovarian and uterine cycles and their hormonal regulation
D3.1.6 Fertilization in humans
D3.1.7 Use of hormones in in vitro fertilization (IVF) treatment
D3.1.8 Sexual reproduction in flowering plants
D3.1.9 Features of an insect-pollinated flower
D3.1.10 Methods of promoting cross-pollination
D3.1.11 Self-incompatibility mechanisms to increase genetic variation within a species
D3.1.12 Dispersal and germination of seeds
D3.1.13 Control of the developmental changes of puberty (HL)
D3.1.14 Spermatogenesis and oogenesis in humans (HL)
D3.1.15 Mechanisms to prevent polyspermy (HL)
D3.1.16 Development of a blastocyst and implantation in the endometrium (HL)
D3.1.17 Pregnancy testing by detection of human chorionic gonadotropin secretion (HL)
D3.1.18 Role of the placenta in foetal development inside the uterus (HL)
D3.1.19 Hormonal control of pregnancy and childbirth (HL)
D3.1.20 Hormone replacement therapy and the risk of coronary heart disease (HL)
