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Originally Posted by pstinard  If it is proven that Minnie is the offspring of two long-haired Yorkies, I see two possibilities for Minnie's short hair: (1) A spontaneous mutation from recessive long hair to dominant short hair that occurred in the sperm or egg cell that gave rise to Minnie (possible, but not likely), or (2) Minnie's parents are carriers for a recessive gene for short hair, and Minnie received a copy from each of her parents (more likely). There ARE recessive genes for short hair that have cropped up in Havanese dogs. See this link: Short Haired Havanese Pictures, 7. It is something to make you wonder... |
But it would take both parents having the recessive shorthair gene to get a shorthair puppy? That would seem to make it harder for this to happen.
Seeing the one picture I saw of one of the parents back on her original thread linked above, the ears and face are quite different from a Yorkie's, besides just the hair. Back on page 1 or 2 of that thread there was a picture. What would have to happen in the breeding to have produced that head and face in a Yorkie? More mutations or recessive genes?