This lot of beans affords another striking instance of the wide range of variation among the seeds of individual plants of the same species. It may be assumed that these widely divergent seeds represent various heredities. Each plant is, in point of fact, a mosaic of characteristics inherited from many lines of ancestry. In Mr. Burbank's phrase, heredity is the sum of past environments. A curious and important feature of the matter is that the different racial strains may be segregated, as illustrated in this lot of beans.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 3 Chapter 9