Genetic Literacy
Every breeder begins by learning the Breed Standard, studying pedigrees, and developing an eye for quality. As experience grows, successful breeders become skilled at evaluating structure, temperament, movement, and breed type. But the transition from being a good breeder to becoming a great preservation breeder occurs when these observations are combined with a practical understanding of genetics.
Genetics is the foundation upon which every breeding program is built. It explains why certain traits consistently appear within families, why unexpected traits occasionally emerge, and why no breeding decision is ever completely predictable. Understanding genetics allows breeders to make thoughtful decisions that reduce health risks while preserving the characteristics that make the Bedlington Terrier unique.
Fortunately, you do not need to be a molecular geneticist to become an excellent breeder. What you do need is genetic literacy—an understanding of how genes behave in real breeding programs rather than simply how they are described in textbooks. DNA tests, pedigrees, health records, and breeder experience all contribute pieces of the puzzle. The most successful breeders know how to bring those pieces together.
Throughout this module, you will explore the principles that guide responsible breeding, including patterns of inheritance, genetic diversity, linebreeding, polygenic traits, and the appropriate use of DNA testing. Along the way, you’ll discover why preserving a breed requires balancing science with experience, short-term decisions with long-term goals, and individual dogs with the health of the population as a whole.
Great breeders do not chase perfection—they pursue continual improvement. They recognize that every litter is part of a much larger story and that every breeding decision influences generations yet to come.
This module will provide the knowledge needed to understand those decisions and help you become not only a successful breeder, but a thoughtful steward of the Bedlington Terrier.
Recommended Reading and Resources
Foundational Canine Genetics
- AKC Canine Health Foundation – Canine Genetics for Dog Breeders (excellent introductory articles)
- The Institute of Canine Biology – Genetics courses and breeder education modules by Dr. Jerold Bell and Dr. Carol Beuchat
- Bell, J. S. Practical Genetics for Dog Breeders (seminars and publications)
- Bell, J. S. The ABC’s of Dog Breeding (AKC)Malcolm B. Willis — Genetics of the Dog
- Malcolm B. Willis — Practical Genetics for Dog Breeders
- Elaine Ostrander, Anatoly Ruvinsky, & others — The Genetics of the Dog (2nd Edition)
- Jerold S. Bell — Veterinary Medical Guide to Dog and Cat Breeds (genetics chapters)
- Carol Beuchat — Managing Genetic Diversity Within Breeds (Institute of Canine Biology)
Population Genetics
- Leroy, G. (2011). Genetic diversity, inbreeding and breeding practices in dogs.
- Calboli et al. (2008). Population structure and inbreeding in purebred dogs.