Follow the evidence.
Each case starts with a real biological question, then connects the story to genes, molecules, organisms, and pathways in the archive.
7 cases, three ways to reason about biology
Each investigation joins evidence from different levels, from molecules and cells to populations and ecosystems.
Genes, traits, and selection
Inherited variation connects molecular mechanisms with health and population outcomes
- Case studyG6PD deficiencyFollow a red-cell enzyme, NADPH, and oxidative defense while keeping variant and exposure context in view.Open record ↗
- Case studySickle cell and malariaFollow HBB variation from hemoglobin to inheritance and context-dependent selection.Open record ↗
- Case studyAntibiotic resistanceUse population evidence to distinguish mutation, gene transfer, and selection.Open record ↗
Microbes, genomes, and place
Outbreak questions need sequences, ecology, and contact evidence
Matter, energy, and environments
A system view links chemical change to living communities
These short routes introduce the questions explored in the case pages. Each page separates measured evidence from the explanation scientists infer.
G6PD Deficiency: Red Cells Under Oxidative Stress
Why can some G6PD variants make red blood cells more vulnerable to oxidative stress?
Open learning case CASE 02Genetics · Proteins · EvolutionSickle Cell, Inheritance, and Malaria
How can one hemoglobin variant affect both health and survival in a malaria region?
Open learning case CASE 03Microbiology · Genetics · EvolutionHow Antibiotic Resistance Spreads
Can bacteria become resistant because they need to, or does a population change through variation and selection?
Open learning case CASE 04Viruses · Genomics · EpidemiologyReading an Ebola Outbreak Through Genomes
What can viral genome differences tell us about an outbreak—and what can’t they tell us alone?
Open learning case CASE 05Microbiology · Ecology · Carbon CycleA Winogradsky Column: Microbes Across an Oxygen Gradient
How can one jar contain microbial communities with very different ways of living?
Open learning case CASE 06Metabolism · Matter and EnergyWhere Cellular Respiration Gets Its ATP
How does breaking down glucose help a cell make ATP?
Open learning case CASE 07Ecology · Microbiology · Human HealthHantavirus, Rainfall, and Ecosystem Change
How could changing rainfall affect the risk of a disease carried by wildlife?
Open learning case