Jeanie K
You are absolutely correct...so is the other poster.
IN THE SENSE that, w/o the paperwork from the AKC vouching on behalf of the paperwork in question regarding the purity of a lineage you wouldn't be able to tell if they were Yorkies or not, even though they're registered as such.
So, no, you cannot tell as of yet-through the AKC, there are private organizations that do this now however!-anything beyond whom is related to whom, but not what breed they are or are supposed to be. That's why your pedigree should match up when the DNA profiles are done. If not, then someone on the list is there that doesn't belong.
Make sense? You're both right and arguing about different things.