Is there such a thing as Homozygous solid? - Page 3 - The Horse Forum
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post #21 of 24 Old 02-07-2012, 11:39 PM
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Wow, this is a bit above my head, genetics wise, lol.
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post #22 of 24 Old 02-08-2012, 09:59 AM
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Originally Posted by nrhareiner View Post
I too get what you are saying. However look at her padigree. On her dams side there is no white on any of the horses. Her dam is a g-daughter of Poco Bueno who has no white. Bottom side of her dam is the same way. Her sire is by Docs Hickory who has only a very small white star. Now there is Doc Bar who has more white but past that there is very little with in 3 generations.

I agree that with the lack of testing it is hard to say but with the exception of splash she has been tested for every other pattern that has a test and is neg for all.
Yeah, that's like the old King Ranch horses where they had an aversion to white. When you have generation after generation after generation of no white, it is a reasonably safe assumption any white has been bred out - test or no test, although a test would of course provide the definitive answer...
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post #23 of 24 Old 02-08-2012, 10:13 AM
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Face that is what I am getting at. She has been tested for everything available up to Splash which I am not going to spend the money to do on her. If you look back at her pedigree bottom side non of the horses have any white. Top side you have to go back 3 generations to Doc Bar to find any white past a very small star.

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post #24 of 24 Old 02-08-2012, 05:03 PM
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My understanding is there is a strong belief that many types of Donkeys have a very strong white repression gene... Which is why there are few pinto Mules with loud body white, even when the donkey is bred to a homozygous pinto horse. (there are some, so obviously not all Donkeys are carriers)

Following that thought it is suspected that some breeds of horses also have something similar.
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