06/05/2026
One of the biggest misconceptions I see is that a dog must be “clear” for every genetic condition to be bred. That’s simply not how responsible breeding works. I think it’s a good goal to strive for.
For many recessive genetic diseases, there are three possible results:
🟢 Clear – Does not carry the gene
🔵 Carrier – Carries one copy of the gene but is not affected
🔴 Affected – Has two copies of the gene and can develop/pass on the condition
A carrier is not a “bad” dog. In fact, some exceptional dogs are carriers for certain genetic conditions. The key is understanding how genetics work and planning breedings responsibly.
As shown in the chart:
✔️ Clear × Clear = 100% Clear puppies
✔️ Clear × Carrier = No affected puppies, some carriers
✔️ Clear × Affected = No affected puppies, all carriers
The combinations breeders should avoid are those that can produce affected puppies, such as Carrier × Carrier or Carrier × Affected.
This is exactly why genetic testing matters. It allows breeders to preserve valuable traits, maintain genetic diversity, and reduce the risk of producing affected puppies.