Tag: Marshall A. Lichtman
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“Am not I a fly like thee?” Drosophila melanogaster and the human genome
Marshall A. Lichtman Rochester, New York, United States A fruit fly displaying its large red eye. Among Thomas Hunt Morgan’s many contribution to the burgeoning science of genetics, he observed some male fruit flies had a mutant white eye. By cross-breeding males with mutant white eyes with females with the dominant trait and, subsequently,…
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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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The first effective chemotherapy for cancer
Marshall A. Lichtman Rochester, New York, United States Caution: Chemotherapy. Photo by Justin Levy. Via Flickr. CC BY-NC-SA 2.0 Sulfur mustard gas had no influence on the outcome of the battle at Ypres during World War I despite the many deaths and severe injuries it inflicted. Since then, chemical weapons have been used in…
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Terminal digit preference
Marshall Lichtman Rochester, New York, United States Figure 1. There are three types of sphygmomanometer; mercury, aneroid, and digital. This figure is of a manual aneroid sphygmomanometer. The rubber pump is used to raise the cuff pressure above the patient’s systolic pressure and then the pressure is released by unscrewing slowly the small valve…
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Deserving but unrecognized: the forty-first seat
Marshall A. LichtmanRochester, New York, United States The Nobel Prizes Each year on December 10th, the anniversary of Alfred Nobel’s death, the Nobel Foundation and the Swedish royal family recognize the individuals deemed to have made the greatest achievements in chemistry, physics, physiology or medicine, and literature; and the Norwegian Nobel Committee recognizes “the person…
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Masters, Lindstrom, and decanal adventures
Marshall A. LichtmanRochester, New York, USA One of the responsibilities of the dean is to foster the relationship of alumni with the school. This effort can lead to enhanced financial support, but it can also bind accomplished graduates, who may or may not think fondly of their alma mater, to the school and its programs.…