I am not going to do this, I was just wondering how a breed is considered pure (meets standard or genetically).
Regarding breeding back to a Buff orp for 8 generations as an example; does that BO you are breeding to need to be traceable to William Cooks flock of 1886?
It sounds like not.
I note that when standards were developed, DNA testing was not possible.
This has changed a lot of things in the last 30 years. For example : woods bison vs bison bison (American Buffalo) now considered one species. Same as Florida Panther vs Rocky Mountain mountain lion.
My question isn’t if it is difficult (I know it is and takes a lot of years and time; I won’t be doing it. I am genetically curious.)
Hatchery stock, or even many breeder stock, of a particular breed has been diluted by other breeds in the past.
However, if one took hatchery stock or breeder...