Yes. It is my understanding that after you breed the first litter of splitters to a full Biewer, the litter will produce maybe one Biewer out of 3.. the next litter, 2 out of 3, the third litter, all three would be Biewers. (that is of course if you had three pups)
The puppies that are born either are pure Biewer (registered as Biewers) or pure Yorkies.. There is a definate formula that others know, I just don't know it.. sorry..
Diana