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On the Possibility of Directed Mutations in Bacteria: Statistical Analyses and Reductionist Strategies
PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association
Vol. 1990, Volume One: Contributed Papers (1990), pp. 111-124
Stable URL: http://www.jstor.org/stable/192697
Page Count: 14
You can always find the topics here!Topics: Genetic mutation, Bacteria, Bacteriophages, Viruses, Reductionism, Genetics, Genotypes, Philosophical analysis, Statistical analysis, Molecular biology
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The ongoing controversy about the possibility of directed mutations in bacteria is examined for its methodological, and thereby philosophical, implications. The method of fluctuation analysis, widely used to investigate whether mutations are random or directed, is described and subjected to a conceptual critique which shows that it cannot decide whether some mutations are directed while most are random. In this context, recent experiments that exploit this possibility to suggest that directed mutations occur in bacteria are described. Interpretive and experimental responses to such claims are briefly analyzed. Finally it is argued that mere statistical analysis, such as fluctuation analysis, cannot resolve this dispute. What will probably be required is an investigation of mechanisms of mutagenesis, an investigation that is intrinsically reductive.
PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association © 1990 The University of Chicago Press