Despite the *A*y allele causing Red coloration being genetically dominant, why can Red hounds still be rare in show lines?

Answer

Breeders actively choose not to breed for them in a given generation.

Although the *A*y allele is genetically dominant, breeders involved in conformation showing have sometimes deliberately chosen not to breed for Red lines in specific generations, leading to practical endangerment despite genetic predisposition.

Despite the *A*y allele causing Red coloration being genetically dominant, why can Red hounds still be rare in show lines?
colorbreedBloodhound