Word: mapped
(lookup in dictionary)
(lookup stats)
Dates: during 1970-1979
Sort By: most recent first
(reverse)
...years later, the suspicions were dramatically confirmed by the pioneering geneticist Thomas Hunt Morgan in Columbia University's famed "Fly Room." Through ingenious crossbreeding experiments with the fruit fly Drosophila melanogaster, Morgan and his students were able to map the relative positions of the genes along the insect's four pairs of chromosomes. Still, the gene's physical nature remained as great a mystery as ever. DNA had been discovered in the nuclei of cells by the Swiss biochemist Friedrich Miescher a few years after Mendel did his work on peas. But since the chromosomes in which...
Dramatic as cloning may be, it is overshadowed in significance by a technique that may well be practiced before the end of this century: genetic surgery, or correction of man's inherited imperfections at the level of the genes themselves. When molecular biologists learn to map the location of specific genes in human DNA strands, determine the genetic code of each and then create synthetic genes in the test tube, they will have the ability to perform genetic surgery...
Waterloo is not without its educational value, though even that would have been enhanced by a clearer map than the one Wellington uses; the youthful student or amateur will at least learn the elementary strategies of the period and enjoy an eagle's view of the battle that changed Europe's life. As for the golden history and legend, they lie buried beneath this delayed replay of a primer on strategy...
...nation's total energy consumption in 1970 was 71 Q. The U.S. Geological Survey estimates that the country contains 5,162 Q of oil, 3,317 Q of natural gas and 32,000 Q of coal. In addition, Canada holds resources far exceeding its own energy needs (see map...
...Samuel Eliot Morison stoppeth one of three-among the myths that pass for history in the European discovery of America. As a seagoing admiral, U.S.N.R. (and Harvardman), Morison gives the back of his salty hand to those modern "library navigators" (particularly Yalemen) who in 1965 swallowed whole the Vinland map story. Morison sees a fine post-1600 hand behind this document, which was dated about 1440 by its discoverers. "I have 'serious reservations,' " he writes, "the polite scholarly term for saying that you suspect fakery." Growling about "phony voyages," he swiftly slaps down as nonsense the folk legend...