Quote:
Originally Posted by Dixies Mom  Even though a thread I have been reading and even posted on is going in this direction, I decided to start the topic here and hopefully get an answer to this question...
Has research of the Parti isolated what has come to be known as the "Parti Gene"? What about in the other colors coming out, the Golden Gene, the Chocolate Gene?
When a breeder states their puppies carry the parti gene, do they DNA each dog to prove it? |
Well, if one parent is a parti, chocloate or clear coated golden, their puppies will be carriers because the colorful parent has two copies of their colorful gene and will pass on one of their colorful genes to all it's offspring. But I've seen people say their puppies carry for "such and such gene" because their grandsire was "such and such" ... I don't know if it's just a dishonest sale pitch or an uneducated breeder who doesn't understand how genetics works? That's where coat color testing can be helpful.
There are labs who DNA for certain coat colors in dogs but I don't know of any who have a test for parti gene yet. Below are a few tests that could be used for the colors we see in our yorkies.
A locus- “Ay” (Fawn, Sable) some of our goldens have sable markings
B locus- “b” (Brown, Liver, Chocolate) - chocloate colored
E locus- “e” (Yellow, Red) - clear coated goldens and blondes
VetGen: Veterinary Genetic Services - Canine - List of Services - Coat Color
I ordered a DNA coat color kit a few days ago to see if my sable golden carries a recessive E locus (e), his mother has produced clear coated goldens so he has a 50% chance of carrying a recessive "e". If he does not have a recessive "e", he will never produce a clear coated golden or blonde puppy, no matter to who he's bred to. Clear coated blondes and golds are "ee" in make up and need a recessive "e" from both parents.
Parti and chocolate are pretty easy to understand but I think there are a couple of different genes that cause the golden coloring.