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Originally Posted by Alliec1 I think what everyone is just trying to get at is how genetics work. I'll take a crack at it, as that is going to be my major and I am in AP biology.
First of all, I think calling partis 'mutts' is incredibly rude. Mutt implies cross breeding from other breeds- these animals are all yorkie. Some people are probably not understanding that the pari gene did not come from outbreeding with some other dog, such as a Maltese.
Now, for simplicity's sake(incredibly simplified, actually....), let's just say that a breed of dog has 2 genes that it carries that determine its color- black and blue. We'll call them BB for black, and bb for blue. Now, BB is the dominant trait..meaning that it will mask the bb trait if it is present at all in the genes. Possible combinations are BB= black dog, bb=blue dog, and Bb=black dog. If you breed a dog with BB genes to a dog with bb genes, you will always get black dogs, since the puppies recieve one half of their genes from either parent. If you breed a Bb and a BB, the same thing happens because B masks all b. Now, if you breed a Bb to a Bb, you have a 50% chance of the bb coming together to make a blue dog. And finally a bb to a bb will always give blue dogs because there is no B present to mask the b.
With the DNA testing, what the poster was trying to get was that DNA is unique. Sure, it currently will not tell you whether its owner is a Great Dane or a Yorkie, but the Great Dane will not have the same DNA as the Yorkie. It's like a fingerprint (pawprint! hehe) So, if you test all puppies, you can find out who what their parent's DNA is. By finding this DNA and comparing it to the DNA held by the supposed parent dogs, it is either a match or it is not. And, since DNA is usually traced back through a maternal lineage for both parentys, you can tell which dogs are related and which are not. |
Yes, the DNA will tell you who the parents are. That's the purpose of the specific test used in partentage evaluation. But if I submitted a DNA sample from a Yorkie and a Maltese, as of now, no one would be able to identify what breeds the samples came from. It is my understanding that a test that will be able to specifically determine the BREED as well as parentage will soon be available.
And in many cases, with the Biewers that is not an issue. But to back up, I have been breeding for over 30 years. And there are many, many breeders who have equal or more experience and ALL