Origins and complexity
From the first living systems to complex cells and multicellular organisms, explore several transitions in life’s history.
10 problemsCollections
Selected problems that share a subject or a research tradition. Each leads to its own overview and sources.
Genes and development
How do genomes and regulatory systems shape traits, reliable development, and repair?
32 problemsInside cells
Molecular traffic, cell machinery, patterned shells and signals between cells.
14 problemsGenomes and inheritance
How genomes change, DNA copying begins and inherited silencing persists.
12 problemsBiological timing
Daily clocks, seasonal signals and the timing of emergence and dormancy.
6 problemsSymbiosis
Recognizing a partner, building a shared body and maintaining a compartment inherited from a partner.
6 problems