In this issue of the Digest readers have the opportunity to read a synthesis paper on "Heredity and Health-Related Fitness" written by the most prominent scholar in the area. While we have known for some time that heredity was a factor affecting fitness performances, it was not until Dr. Bouchard and his colleagues began their in-depth studies in the area that we began to really know the extent...

The study of variation and heredity, in our ignorance of the causation of those phenomena, must be built of statistical data, as Mendel knew long ago; but, as he also perceived, the ground must be prepared by specific experiment. The phenomena of heredity and variation are specific questions. That is where our exact science will begin. Otherwise we may one day see those huge foundations of “bio...