Deep TimeLife & Evolution

Sexual reproduction

1.2 billion years agoMajor

Combining genes from two parents speeds up evolution and generates enormous diversity.

Longest chain: The Big Bang → First stars ignite → Supernovae seed heavy elements → The Sun forms → Earth forms → First oceans → First life → Photosynthesis evolves → Great Oxidation Event → Complex cells (eukaryotes) → Sexual reproduction

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BookMatt Ridley

The Red Queen: Sex and the Evolution of Human Nature ↗