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Originally Posted by kalina82  THe first beiwer came from 2 standard yorkies. They have a double recessive piebald gene. Biewers, unlike parti yorkies, have a breed standard and a set color pattern. They are also their own breed in germany. The AKC has yet to recognize them but hopefully they will soon. |
Biewers came from two traditional colored yorkies who both carried the recessive spotting gene called the Irish spotting gene, which produces a consistent and predictable spotting pattern. Biewers have their own breed standard and set color pattern because they were ineligible for registration with the official breed kennel club/registry so they began their own club and registry.
Parti's follow the breed standard set by the YTCA (with the exception of their coloring) and most parti's have the piebald spotting gene which produces random and unpredictable spotting - thus they don't have a "set color" pattern standard. Parti's are eligible for registration with the AKC but are banned from showing in AKC conformation classes, due to their off standard coloring.