How did the Columbian pattern Wyandotte arise according to the text?

Answer

Accidental cross between white Wyandottes and barred Plymouth Rock birds.

The Columbian color pattern, one of the nine varieties recognized by the APA, was not derived directly from the original silver-laced line through simple extension or barring genes alone, but rather through a specific hybrid event. This pattern was established due to an accidental crossbreeding event that introduced the necessary genetic markers, involving white Wyandotte birds being mated with barred Plymouth Rock birds. This history shows how interactions between different American breeds contributed to the overall genetic diversity within the Wyandotte subspecies.

How did the Columbian pattern Wyandotte arise according to the text?
animalclassificationpoultryChickenWyandotte