How to Shift the Gears in Your Legs?

actuators, anatomy, automatic transmission, bike riders, Biomimetics, bones, engineers, Evolution, gear-shifting, gears, handlebar, human motion, Intelligent Design, Jack A. Martin, joints, legs, ligaments, locomotion, muscles, offices, paraplegics, physics, physiology, PNAS, redundancy, robot designs, tendons, unguided evolution, University of Wisconsin-Madison, walking
The answer to the question: You don’t have to do anything. You have automatic transmission. Source
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A Method in the Madness of “Degeneracy”: Here Is Another Genetic Code

amino acids, bacteria, biological engineering, biology, Boris Zinshteyn, codons, combinations, degeneracy, dormancy, Francis Crick, function, genes, genetic code, genetics, hypoxia, Intelligent Design, mismatch, MIT, Mycobacterium bovis, oxygen, Peter Dedon, PNAS, predictions, proteins, Rachel Green, redundancy, Science (journal), Scripps Research Institute, transfer RNA
The report from MIT doesn’t hesitate to call this a “newly discovered genetic code” or “alternate genetic code” with functional significance. Source
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