Conceptual tensions between theory and program: The chromosome theory and the Mendelian research program

Laudan's thesis that conceptual problem solving is at least as important as empirical problem solving in scientific research is given support by a study of the relation between the chromosome theory and the Mendelian research program. It will be shown that there existed a conceptual tension between the chromosome theory and the Mendelian program. This tension was to be resolved by changing the constraints of the Mendelian program. The relation between the chromosome theory and the Mendelian program is shown to be a good illustration of the influence of science itself on the rational standards governing scientific development.I thank A. A. Derksen, N. Roll-Hansen and the anonymous referees for their helpful comments.