Related Experiment Video
Updated: Aug 3, 2026

Testing Nicotine Tolerance in Aphids Using an Artificial Diet Experiment
Published on: May 14, 2008
Henrik Kacser--a neglected author?
1Institute of Medical Sciences, School of Medical Science, University of Aberdeen, Aberdeen AB25 2ZD, Scotland, UK. j.w.porteous@abdn.ac.uk
Abstract:
All sciences progress by elaborating new concepts and by finding new relationships between the parts of a system of interacting components. Henrik Kacser, with a background in Biophysics and Genetics, was well placed to develop a new and comprehensive analysis of the control of metabolic fluxes and metabolite concentrations; and to demonstrate that changes in the concentration of normal metabolites were as important in Genetics as changes in the composition of metabolites in bringing about a change in trait.
Related Concept Videos
Keystone Species
Social Loafing
Null and Alternative Hypotheses
The null hypothesis, denoted by H0 is a statement of no difference between the variables—they are not related. This can often be considered the status quo. As a result if you cannot accept the null, it requires some action.
The alternative hypothesis, denoted by H1 or Ha, is a claim about the population that is...
Freudian Psychology
Horney's Sociocultural Approach
Adler's Individual Psychology

