Word: coli
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Dates: during 1971-1971
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...genetic failing in such cells, the scientists used a favorite tool of geneticists: bacteriophages, or viruses that prey on bacteria and may pick up genes from them. The viruses used in the test had a particular virtue: the gene that they had acquired from the common intestinal bacteria Escherichia coli was the one that orders the bacterial cell to manufacture the same galactose-metabolizing enzyme produced in humans...
...complex as the system it directs. Even after two decades of intensive study only about one-third of the genes have been mapped along the length of DNA in the chromosome of so elementary a creature as the digestive-tract bacterium Escherichia coli. The reason: just a teaspoon of E. coli DNA has information capacity approximately equal to that of a computer with a storage capacity of about...
...PART, is even more generously endowed?with 1,000 times as much DNA as one E. coli in each of his reproductive cells. Even so, the cells of such relatively primitive animals as salamanders, lungfish and even certain one-celled algae contain far more DNA than man's. Does this mean that such lowly beasts have a richer genetic capacity than man? The Carnegie Institution's Roy Britten and David Kohne, after much painstaking investigation, may have found the answer to that embarrassing question. A few years ago they discovered that in the DNA of higher organisms many genes seem...