Word: germ
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...geneticist will say that he has seen a gene, but last week Dr. Bridges would not say that he had not seen one. The chromosomes themselves in the fruit fly's germ cells are no larger than .00015 inch long, minute dots and streaks under the best microscopes. The chromosomes in the fly's salivary glands, however, are 70 times bigger than those in the germ-plasm, and two years ago Dr. Theophilus Shickel Painter of University of Texas took pioneer photographs of these tiny giants showing cross-bands. Then Dr. Bridges made such good photomicrographs...
...formidable, bushy-browed Biologist William Bateson, went to the Columbia University laboratories of Thomas Hunt Morgan, examined the data, looked at the jars of fruit flies, stared down the microscopes, announced his conversion. Since then there has been little doubt among geneticists that the chromosomes in the germ cells are the theatres of heredity, that the ultimate agents, called genes, which transmit unit characters, occupy definite and fixed positions along the spindly, crooked chromosomes. Since then fame has come to Dr. Morgan and his flies, and to some of his early laboratory helpers, notably to affable, shock-haired Calvin Blackman...
...scientists are suited by temperament and intellect to keep vigil on the heights where paradoxes flourish in the wind of metaphysics and knowledge fades into the unknown-to clock the flight of star clouds, chop the atom's nucleus into mathematical hash or chase the primordial life-germ through a thicket of test tubes. Some workers must patrol the vales & swales where humbler things may be found beneath any stone. Such upturned stones during the past fortnight disclosed the following...
...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...
Howerth finally conquered the monster he had created, and diabolic old Nicholas Holtz was at last cornered by a kitten. But long before this ingenious horror story lays out its final cadaver, many a germ-haunted reader will be thinking seriously of gargling...