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Extreme-altitude birds evolved same trait via different mutations

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#1 ScienceDaily


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Posted 20 February 2018 - 11:30 AM

All extreme-altitude birds have evolved especially efficient systems for delivering scarce oxygen to their tissues. But a new study has found that these birds often evolved different blueprints for assembling the proteins -- hemoglobins -- that actually capture oxygen in the Himalayas and Andes.

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