For the first time, University of Nebraska biologist Jay Storz and colleagues demonstrated how different species can take different paths to develop the same trait. To test this idea, Storz studied and compared high-altitude birds from the Andes to similar low land birds. The results were that the high-altitude birds had hemoglobin that had evolved to readily bind with oxygen to make flying at high altitudes. This one trait could’ve come about through a plethora of different mutations and adaptations. An explanation was that hemoglobin may have evolved separately amongst species, indicating that some traits evolve in in beneficial ways to some species that could be harmful in others. To test this, high-altitude hemoglobin proteins were reconstructed in ancient bird ancestors’ DNA and it was found that the results had differing on modern birds. In this way, the group proved that different species have the same traits but that these traits show up differently due to evolution.
For more information, read the full article on: https://www.sciencedaily.com/releases/2016/10/161020165128.htm
Author: Harsha Patil
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