[Brooklynn]

Here's the thing....no dog is perfect and you'll never achieve the perfect dog it's just not going to happen.
The Parti color is a DQ in the Yorkshire Terrier Standard...so therefore that is not what should be in the show ring and should be in a pet home. Until that changes it's simple breed to the standard. A low tail set is not a DQ and a yorkie can have a level top line with a low tail set but of course you want to improve on that tail set so you breed to a yorkie that has a good tail set. All dogs have faults you breed to improve those faults. A Parti is a DQ so of course you shouldn't be breeding for that. Of course the siblings will inherit what is a fault so there for you place in a pet home and keep and show/breed the better quality one and keep on improving on the one that is the better representation of the breed.