@Mosey2003 thanks for making that so clear for me. “A chicken is considered the breed it most closely resembles” is absolutely different than a dog or horse or most other animals and makes so much sense to me.
Does this mean, for example, a breeder could take a generation of breed 1 and add in a completely different breed (breed 2) and as long as the subsequent generations get back to and stack up to the SOP of breed 1, those later generations, that could be say 10-15% breed 2, are still considered breed 1?