Word: unless
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Dates: during 1950-1959
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Beadle and Tatum irradiated masses of mold with X rays and searched for mutations in the spores. On the 299th try they got a mold that would not grow unless it was fed vitamin B-6 (pyridoxine). The normal mold makes vitamin B-6 for itself. They traced this deficiency to an X-ray-damaged gene that failed to produce the necessary enzyme (organic catalyst) for producing B6. This provided a means of studying genetic changes by corresponding changes in the organism's ability or failure to produce specific chemicals-thus giving genetics a new exactness and turning...
...There seems to be very little talent among what 'Beat Generation' writers I have read. One likes to keep one's mind open to fresh talent, but these people think they are artists just by screaming. You can't really 'howl' unless you're a disciplined artist...
Rock feels that Communism or other radical movements may take control in underdeveloped lands, unless the population rise is kept under strict control...
...Unless the world-wide birth rate is sufficiently cut within 50 years, "hungry and crowded people will rise in bestial strife," Dr. John Rock '15, Clinical Professor of Gynaecology, Emeritus, predicted on Wednesday...
...indeed disappointing to see the failure of a play whose material offers such great possibilities. Unless The Disenchanted undergoes major rewriting, it will remain a clearly unsatisfactory effort...