The IFR booklet "A layman's walk through basic canine genetics. Genetic diseases and the correlation with a reduced genetic diversity of the breed" is an edition by the IFR and meant for all amateurs, especially all breeders.
It explains basic genetics in an easy to understand manner, goes into some of the genetic diseases that exist in the Rottweiler-breed and explains how the prevalency rate of these diseases is influenced by in- and linebreeding. The booklet holds a strong warning against the ever more reduced genetic diversity of our breed.
The following link leads to the text in an online magazine format : http://www.genetics.rottweilerclub.be