Tag: mitochondria
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When Darwin was wrong
John HaymanVictoria, Australia 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 he also presented evidence to support it and put it forward in a readily understood manner that could be comprehended by…
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Mitochondrial DNA: a maternal gift
Marshall LichtmanRochester, New York, United States 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 thousand genes and the smallest several hundred. DNA is so tightly wound that uncoiled from a single…
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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…