Is there a way to tell het pied on appearance?

[asplundii]

I think that the marker trait is a product of the pied, but I feel that it is a trait that is not always shared visualy. I am not claiming that many normals dont share these traits, sellers sometimes claiming that they are hets. But in my opinion what it comes down to is, only buying a het from a trustable breeder.

To me, if the marker was a product of the allele then there should be a 1:1 correlation which we do not have. However, if it is a case of linkage from inadvertent selective breeding that explains why you still get the 100% hets who look normal.