The adherence to type, the favourite conception of the transcendental morphologist, was seen to be nothing more than the expression of one of the laws of thremmatology, the persistence of hereditary transmission of ancestral characters, even when they have ceased to be significant or valuable in the struggle for existence, whilst the so-called evidences of design which was supposed to modify the limitations of types assigned to Himself by the Creator were seen to be adaptations due to the selection and intensification by selective breeding of fortuitous congenital variations, which happened to prove more useful than the many thousand other variations which did not survive in the struggle for existence.
Some of these changes he supposed to have been the result of new conditions, including abundance of food and protection from enemies, but most he attributed to the accumulated results of selective breeding.
Both changes had been brought about by careful selective breeding.
The program was inspired by Noyes ' theology of Perfectionism, Plato's Republic, agricultural selective breeding and concerns about human heredity.
The UK National scrapie Plan aims to eradicate scrapie from sheep flocks via the selective breeding of disease-resistant animals.
