Word: molecular
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Deadly Message. Gallo's hypothesis tends to support the iconoclastic ideas of Howard Temin, a University of Wisconsin molecular biologist who long espoused what his colleagues considered a major heresy. According to accepted theory, the hereditary information in the chromosomes of all cells passes in the same direction. Double-stranded DNA molecules make single-stranded messenger RNA molecules, which then direct the production of proteins, the basic building blocks of every cell. Temin contended that the process is sometimes reversed: RNA, he insisted, could make DNA. Otherwise, he asked, how could cancer-causing viruses−which consist of bundles...
...Raman discovered in the late 1920s that when a beam of monochromatic light shines through a transparent substance like quartz or water, the wave length, and thus the color, of some of the scattered rays is changed. The Raman effect, as it was called, became useful in determining fine molecular structure...
...students who have completed introductory biology courses, or who have read the first edition of Molecular Biology of the Gene, Watson's second edition contains a few surprises. A lot has happened in molecular biology in the last five years, and most of the changes are reflected in comparison of the two editions. Substantial amounts of new information have accumulated in diverse areas: In the 1965 edition, Watson ended a chapter with the announcement that "much more must be learned about ribosomes." In the 1970 edition, there are twenty pages of new information. There is also new information on specific...
...reader searching for immediate medical and social relevance in molecular genetics will find the chapters on viruses and cancer especially informative. It's not necessary to be a hard-core biochemist to read Watson, and a look at these chapters will make technical papers and even newspaper stories about cancer experiments a lot more comprehensible. In the chapter entitled "A Geneticist's View of Cancer," Watson first discusses the specific changes cancerous cells undergo on infection, and then details the molecular mechanisms proposed for the transformation of cells by tumor viruses. If left at that, this chapter would...
...molecular biologist's contribution to medical research is already large, and is likely to grow with the expansion of cancer research. An examination of Molecular Biology of the Gene will give the reader not only a good understanding of molecular genetics, but a solid foundation for keeping up with future advances in medical and biological research...