Sagan: a symbiotic theory for the origin of mitosing cells

What changed

Eukaryotic origins gained a concrete symbiotic research program, with some proposed components later revised.

Scientific scope

Lynn Sagan's 1967 paper; individual components vary in later acceptance, and molecular confirmation is separate.

Evidence

The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The paper’s byline is Lynn Sagan, later known as Lynn Margulis. Some components were revised, and earlier symbiosis proposals and later molecular validation remain separate.

Contributors

• Lynn Sagan · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.

• Lynn Sagan, On the origin of mitosing cells (1967)

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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