"Is 'genetic determinism' empirically valid, and is it essential to the "Modern Synth

Elmer,Perhaps you would be interested in reinvesting your work in this thread in the "Discussion" my Grandfather created in 1935 in the work, "The Effect of Temperature Upon Wing Size in Drosophila" (JExZoo Vol 69, No3)?If you really even wanted to bring in QM, via heat being a kinetic energy of molecular motion and a notion in Macrothermodynamics it may be possible (finding the lower free energy wells), in the context of the genes and trait(s) discussed in this paper, to find that temperature (rather the "thermostat") could be thought in the same continuum that binds descent. From there it might be asked if cause and effect have linear relation or a reciprocal one. We have to be able to get there though.