An F1 is a yorkie with a Biewer (many consider Biewers a separate breed, even though they are yorkies). All of the babies will carry one piebald (Biewer) gene and one regular yorkie gene. They will ALL look like regular yorkies.
F2 is an F1 breed to a Biewer. Some puppies will be Biewers (2 piebald genes) and some will look like regular yorkies (one piebald gene and one regular yorkie gene)
Most Biewer people do not use the terms F1, F2, etc. I have two girls that I call Splitters (their genes are split, 1 piebald gene, 1 regular yorkie gene). It does not matter if they are F1, F2, or F58, a splitter only 1 piebald gene and 1 regular yorkie gene.
Right now I have no intentions of breeding to a yorkie that is not a splitter. I won't say never though, as who knows what the future will bring. "Never" can make you into a lier!!! |