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The trouble of being tall


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IMAGE: Giraffes are in general very alert and exploit their height advantage to scan the horizon using their excellent eyesight
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Credit: Mogens Trolle
The giraffe is a truly puzzling animal. With its exceptional anatomy and suite of evolutionary adaptations, the giraffe is an outstanding case of animal evolution and physiology. Now, an international team of researchers from the University of Copenhagen and Northwestern Polytechnical University in China have produced a high-quality genome from the giraffe and investigated which genes are likely to be responsible for its unique biological features.
The extraordinary stature of the giraffe has led to a long list of physiological co-adaptations. The blood pressure of the giraffe, for instance, is twice as high as in humans and most other mammals to allow a steady blood supply to the lofty head. How does the giraffe avoid the usual side effects of high blood pressure, such as severe dam ....

Rasmus Heller , Qiang Qiu , Northwestern Polytechnical University , University Of Copenhagen , Department Of Biology , Cell Biology , Ecology Environment , Population Biology , Zoology Veterinary Science , ரஸ்முச் ஹெல்லர் , கியாங் கீயூ , வடமேற்கு போள்யிட்டேச்ணிகள் பல்கலைக்கழகம் , பல்கலைக்கழகம் ஆஃப் கோபெந்ஹேகந் , துறை ஆஃப் உயிரியல் , செல் உயிரியல் , சூழலியல் சூழல் , பாப்யுலேஶந் உயிரியல் , ஸுவாலஜீ கால்நடை அறிவியல் , உயிர் தகவலியல் ,