Lynn Margulis

Lynn Margulis was a visionary biologist who proposed the endosymbiotic theory, which explains the origin of eukaryotic cells. She argued that complex cells evolved through a symbiotic relationship between simpler prokaryotic organisms, such as mitochondria and chloroplasts being derived from ancient bacteria. Initially controversial, her theory is now widely accepted and is considered a fundamental pillar of modern cell biology. Margulis challenged the focus on competition in evolutionary theory, emphasizing the role of symbiosis and cooperation in the development of life.

Her work continues to influence studies in microbiology and evolutionary biology.