Tag: mitochondria
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When Darwin was wrong
John Hayman Victoria, Australia Fig. 1. The Parallel Roads of Glen Roy, as would have been seen by Darwin. (Photo by Bev Biggs.) Charles Darwin (1809-1802) is rightly famous, not for the discovery of evolution but for revealing the mechanism by which it may occur, natural selection. He not only formulated this idea, but…
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Mitochondrial DNA: a maternal gift
Marshall Lichtman Rochester, New York, United States Human haplogroup tree rooted at Mitochondrial Eve. By Wapondaponda. 2009. Via Wikimedia. CC BY-SA 3.0 DNA is arrayed on twenty-three pairs of chromosomes in human cell nuclei. It is coiled tightly around proteins called histones that together with DNA form a chromosome. The largest chromosome carries several…
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What can physicians learn from Benjamin Rush, blood, and the Red Cross?
Ryan HillJamestown, Rhode Island, United States Despite the adamant opposition he encountered from many of his contemporaries, Dr. Benjamin Rush was undeterred; he was certain that bloodletting was the most prudent of all medical procedures and remained faithful to the practice. The late eighteenth century doctor received harsh criticism for his excessive use of this…