Dissimilar Twin Pears
These seedling pears are full sisters, not-withstanding their extreme dissimilarity of appearance. They illustrate the curious segregation of characters - in this case the color of the skin-in organisms of mixed heritage. It is obvious that the pear at the right has qualities of color that the plant developer is sure to seize upon.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 4 Chapter 4