Protein Evolution: Nonrandom Patterns in Related Species

  • Francisco J. Ayala
Conference paper
Part of the Lecture Notes in Biomathematics book series (LNBM, volume 19)

Abstract

Empirical science employs a hypothetico-deductive method consisting of two interdependent exercises or episodes, one imaginative, the other critical. To have an idea, advance a hypothesis, or suggest what might be true is an imaginative or creative exercise. But the idea or hypothesis must be subject to critical examination and test. The “criterion of demarcation” which separates the empirical sciences from other realms of discourse, such as logic or metaphysics, is that empirical hypotheses or theories are subject to the possibility of empirical falsification (Popper, 1959). Empirical tests of a hypothesis consist of finding out whether predictions about the world of experience derived as logical consequences from the hypothesis agree or not with the states of affairs observed in the natural world.

Keywords

Migration Starch Recombination Electrophoresis Polypeptide 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1977

Authors and Affiliations

  • Francisco J. Ayala

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