You breed a 66% het for albino to a visual albino, and you get all het albinos. This is unlikely if he's actually het for albino, but it's possible. Would you still consider him 66% het for albino?
Say you would. You breed him again to a visual albino and, again, you get all het albinos. Is he still 66% het for albino? If so, how many times does he have to fail to produce an albino before you decide that he's not a het for albino?
Why do I ask? I've been reading a little about genetics and this is a question at occurred to me.