Cellular symbiosis: Lynn Margulis’s contention that eukaryotic cells (proto-proto-Us) developed from a merger between our ancestral host cells and bacteria about two billion years ago. It gets better. The mitochondria that do the work in almost all the cells of our bodies are thought to have descended from close relatives of the bacteria that cause typhus.
Newly arrived and badly underfunded Hopeful Cell meets Old Money Bacterium on a street corner during the Primeval Recession:
“Buddy, can you spare a gene?”
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