Quote:
Originally Posted by Rhetts_mama  The white gene is recessive. In order for it to be expressed it has to be present in both the dam and the sire.
Using Punnett squares, you will see the following:
Two traditional colored yorkies without the parti gene will produce only traditional colored yorkies (4:4).
A traditional colored yorkie bred to a traditional colored parti carrier will have all traditional colored pups, but have a 50% chance of passing the gene on to each off spring (2:4 are traditional without the gene, 2:4 will carry it.)
A traditional colored yorkie without the parti gene bred to a full parti will produce tradtional colored pups that all carry the parti gene (4:4).
Two traditional colored pups with parti genes will have a 1:4 chance of producing a pup without the gene, 2:4 of producing a traditional colored pup with the gene and a 1:4 chance of producing a parti colored yorkie.
Breeding two full parti's will result in only parti's (4:4) |
And the question exists on why the parti's can hurt the existence of the Yorkshire Terrier as we know it today!...Genetics is the answer!