Tested Pony: Xanadu of Chincoteague

Xanadu of Chincoteague is a 2025 filly that was sold at the Pony Penning auction. Her sire is the bay Thunderbolt and her dam is the bay tobiano Amari's Journey. Both are living on Assateague. She's the first foal of both of her parents to be tested. Many thanks to her owner Barbara for testing her!

Xanadu of Chincoteague's test results: A/a, E/E, nd1/nd2, TO/n, EDXW3/EDXW3
Xanadu is a bay and since both of her parents are also it was a possibility for her to have two copies of black and the bay causing agouti. However, both of her parents carry recessive chestnut and her older full sibling is chestnut. Xanadu's test results show that she didn't get the chestnut and has two copies of black, E/E. And she only inherited one copy of agouti, A/a.
https://www.thecolorfulchincoteague.com/bay.html

She has one copy of non-dun1 that can cause primitive markings like dorsal stripes.Then also one copy of non-dun2 which can remove them. This showed on her test as nd1/nd2.
https://www.thecolorfulchincoteague.com/primitivemarkings...

Only her dam Amari's Journey is tobiano pinto. So she inherited one copy of tobiano from her dam, TO/n. Her dam might have two copies, we'll have to wait and see.
https://www.thecolorfulchincoteague.com/tobiano.html

What I found really interesting is she's homozygous for white pattern Eden White 3, aka EDXW3/EDXW3. While several Chincoteagues have been tested to have EDXW3, Xanadu is first Assateague born tested to have two copies. Her test result means that both Thunderbolt and Amari's Journey have Eden White 3. I have hair from two more Thunderbolt foals so I'm interested to see if either or both have it too. Whenever I get around to testing it. The Eden group of white patterns are one of the newest discovered and we're still learning what they do. So far it seems they will add white markings and boosts other white/pinto patterns. It didn't really do that on Xanadu because...
https://www.thecolorfulchincoteague.com/eden-white.html

It's not testable at this time but she appears to have something that's stopping/suppressing the amount of white tobiano and eden white 3 are trying to put on her. Xanadu's considered a minimal tobiano pinto since her only white is on her legs and a strip across her neck.
https://www.thecolorfulchincoteague.com/minimaltobiano.html

Thanks to this test we can now verify parentage from both of her parents through Etalon's ancestry program!