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No. 40: Jul-Aug 1985

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Genetic code not universal!

Most current textbooks pronounce that the genetic code is not only universal to life but that it must. Alterations in the code, the reasoning goes, would garble genetic messages. Such dogma, however, is based on another dogma, which states that all life on earth derives from a single ancestral line in which the genetic code is fixed and has always been fixed -- a "frozen" accident hit upon "by chance" on the primitive earth. Recently, though, small deviations from the code have turned up in ciliated protozoons and mycoplasmas, much to everyone's surprise.

(Scott, Andrew; "Genetic Code Is Not So Universal," New Scientist, p. 2l, April 11, 1985.)

Comment. No major deviations from the standard genetic code have been found; but then no one has really looked, because everyone knew the code was universal. It would be quite a shock if terrestrial life were found to have several genetic foundations and as many schemes of evolution.

From Science Frontiers #40, JUL-AUG 1985. © 1985-2000 William R. Corliss

Science Frontiers Sourcebook Project Reviewed in:

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  • "Before opening the book, I set certain standards that a volume which treads into dangerous grounds grounds like this must meet. The author scrupulously met, or even exceeded those standards. Each phenomenon is exhaustively documented, with references to scientific journals [..] and extensive quotations" -- "Book Review: The moon and planets: a catalog of astronomical anomalies", The Sourcebook Project, 1985., Corliss, W. R., Journal of the Royal Astronomical Society of Canada>, Vol. 81, no. 1 (1987), p. 24., 02/1987