What Are The Differences Between F1, F1b, F2 etc.

• F1 = Cocker Spaniel & Poodle
• F1b = F1 Cockerpoo & Poodle or Spaniel
• F2 = F1 Cockerpoo & F1 Cockapoo
• F2b = F2 Cockapoo & Poodle or Spaniel
• F3 = F2 Cockapoo & F2 Cockerpoo
  

PRA

PRA Carriers
Carriers have one faulty gene and one healthy gene.
In most PRA diseases, the healthy gene will switch off the faulty gene and a carrier will never develop retinal atrophy.
(The notable exception to this is the Autosomal Dominant PRA seen in English Mastiffs and Bullmastiffs – in this type, carriers will also develop symptoms).
They will, however, pass on the faulty gene to about half of all their puppies.
PRA Clear dogs
Clear dogs have two healthy genes.
What PRA clear in dogs means that they will never develop that type of PRA.
A dog tested clear for a particular type of PRA can also never pass the gene for it to their puppies.
This makes them ideal candidates for breeding.

Breeding From Carriers

PRA testing in dogs enables us to breed from carriers. Provided that the carrier is mated to a clear dog, in the knowledge that none of the puppies will be affected.