Word: mendelianism
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Firmly established is the Slye doctrine that susceptibility to cancer is inherited as a recessive Mendelian character, transmitted by a single gene. Resistance to the disease is a dominant character, and represses, but does not obliterate, the susceptibility factor whenever they occur together. A resistant individual mated to a susceptible one will have resistant offspring. But these offspring carry the susceptibility gene concealed in their germ plasm, and if they mate with susceptibles the second generation will be liable to cancer. The Slye mice show that not only inherited susceptibility but also some injury or chronic irritation is necessary...
...three scholars of different countries dug up the Mendelian laws almost simultaneously, and the modern science of heredity got under way with a bang. Thomas Hunt Morgan made the tough, quick-breeding fruit fly, Drosophila melanogaster, the most famed insect in the scientific world, correlated hundreds of Mendelian characters with invisible transmitting agents called genes, strung out along the germ-cell chromosomes. It became apparent that Mendel's peas were priceless landmarks in the history of biological science...
...same reason that occasional humans are: congenital lack of black pigment cells in the skin. For some reason albino frogs are far rarer than albino humans, lobsters, squirrels, peacocks, porcupines. About one out of every seven normal humans carries the albino inheritance in his germ-plasm as a recessive Mendelian character, and one person in every 25,000 is an albino. Albinism has been recorded in the great majority of animal and plant species. But Dr. Noble, contemplating Whitey, guessed that possibly not more than one like her could be found among millions of pond frogs. Naturalists believe most "pale...
...talk. It is expected that the lecturer will confine himself to the more familiar aspects of Biology. Professor Macdonald will probably explain at length Darwin's theory of the origin of species and the present conception of evolution that has grown from it. Another topic might be the Mendelian theory of the inheritance of characteristics, or Patseur's work on sterilization. A point of far-reaching importance that will posisbly be discussed is the greater collaboration of chemist and biologist...
Cancer. Dr. Maud Slye of Chicago University said that the Mendelian law of heredity applied to cancer susceptibility and cancer resistance developed through 67,000 individual studies on mice. Persistently Pathologist Slye bred the reliable rodents. Twenty years she worked and has finally concluded that cancer is not contagious, but tendencies for or against it can be inherited in mice. Twenty-five generations has she bred absolutely free of cancer because the original stock had been eugenically chosen. Cancerous ancestors infallibly transmitted the disease down the generations infallibly. Said Dr. Slye: "If we could manage human breeding as expertly...