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Published online 16 September 2004 | Nature | doi:10.1038/news040913-20

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Tibetans show 'evolution in action'

A gene for well oxygenated blood is spreading in the Himalayas.

Tibetan mothers have provided anthropologists with a prime example of ongoing human evolution. Researchers have found that women who are able to store more oxygen in their blood have more offspring that live to maturity.

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