Zebras

Come to think of it most I've seen have looked bay!
http://www.spotsnstripes.com/PhotoAlbum…" onclick="window.open(this.href);return false;
Zantazia is the closest I've seen...

eta: http://www.izzza.com/IZZZAZorseRegistra…" onclick="window.open(this.href);return false;
there is an option for chestnut...of course there is also an option for cremello, so not sure about that one, haha

edit again: http://creationwiki.org/File:Chestnut_Z…" onclick="window.open(this.href);return false; not sure if its just wild bay?

edited again again: http://barbaradlivingston.photoshelter…" onclick="window.open(this.href);return false;
newer photo of Zantazia! Learning all sorts of things about forum members, lol! Didn't realize Barbara had gone out to spots and stripes, I'm glad to know they still exist (web page hasnt been updated since like 2007)

We have had this discussion before, but since I cannot remember how it ended up, I am more than willing to have it again. I am pretty sure the answer is No as there do appear to be Bay base Zebras and there are Cream ones, too....can't remember what the genetic make up was but there are some cool pictures! Google Cream Zebras....

I would bet the are bay dun.

I am loving Zantasia !! :ymdaydream:

Zantastia and the Wiki one look so cool!!! They both still could be bay of some sort.

I do believe they are homozygous black as does CMHorses who has done [i]extensive[/i] research on zebras and zebra hybrids. I am quite sure they are bay and brown duns. CM says she believes 'EE AAt DD' with the occasional cream. Some could be 'AA' and some 'AtAt' but we don't really believe there are any 'aa's.

I'm not sure I understand why they would be AA. Zebras don't have red bodies. I thought the bay zorses were getting the agouti from the horse parent.

If you look at some types of zebras the 'white' stripes are really very diluted 'red' stripes. The 'black' stripes are like a very extensive dun variation of primitive markings. Imagine a super diluted bay dun with shoulder bar type markings all the way down its back and, voila, you have a zebra.

Everyone pretty much answered my opinion on it. You also have to remember that I have seen foals out of numerous mares, and EVERY zorse and zonkey was bay based. Some wild, some brown, and some regular. I highly doubt that out of all the zorses/zonkeys born that every dam just happened to have bay and pass it. There were absolutely no grullo foals out of any mares and absolutely no chestnut foals, unless they were extremely sooty, but IMO that is very very unlikely.
I am really looking at where their black is and how black they are, the ones that get mistaken for chestnut generally have black ankles, those I dub the wild bay duns, the ones that have the regular black legs are regular bay and the ones that have a lot of black on the neck/ general body I dub seal/brown duns.

But, if the Zebras are Dun, how come no Grullo foals?

Maybe its a different type of dun? Or a different dun modifier... or that they're all AA? Probably just a combo, but I'm not zebra expert.

Because all Zebras are a mixture of A+ A and At with no "a". Thus no grullas.

Because in a zebra, a grullo would look no different than any other zebra. They are all hyper diluted and super factored duns. They will all be pretty much white (super diluted body color) with black stripes (max dun factor).

Hasn't anyone done any detailed genetic testing for the basic extension/agouti/dun factors? I know I'd love to see the data, esp. if it encompassed all subspecies of zebra (Grants, Grevy, etc.).

I would like to see it too. I know basic horse extension tests work on donkeys, so I would think it stands a good chance to work on zebras as well.

I don't know about other color mutations being testable between equine species since they are probably different mutations in most cases.

Does the dun test work on donkeys? I always thought about sending in Ellie's hair to them and saying she was a horse just to see if it would work...

Sorry, guys, my brain is on go slow due to new pain meds....[i]why[/i] does A preclude Grullo...words of one syllable, please :sign

Aa = bay
bay + dun = bay dun

aa = black
black + dun = grullo

if A then not black

:) <3

Zebras are genetically more distant than horses are to donkeys. So I would not be surprised if it doesn't work.

The only reason why the extension test seems to work on donkeys is that horses and donkeys share 19 chromosomes that haven't changed much during speciation when horses and donkeys branched off long ago during evolution of equus. And the location for the extension test is on one of those 19 chromosomes that hasn't changed much. So I think an extension test might have a good chance of working on a zebra.

I don't doubt that zebras share certain mostly unchanged chromosomes with horses. But the chances are much lower for other tests beyond extension working on them. Not to mention that genetically speaking any zebra is more distantly related genetically than horses are to donkeys.

The mutation for a similar looking color in zebras and horses might not even be the same mutation at all and could have occurred after horses and zebras split into different subgenus classifications. I.E no shared ancestry for 2 different mutations that just look similar.

Donkeys are closer to horses then zebras? I never would have guessed that.

Yup ^_^ Zebras have been separated for the longest of all living equid species so genetically they have developed further apart. Donkeys are kind of in the middle of the two but closer to zebras.

And Grevy's zebras are further genetically from Mountain and Plains zebras than domestic horses are to Przewalski horses. The Grevy's is even in a different subgenus than the other 2 zebra species. And then to top it all off the Plains and Mountain zebras who are in the same subgenus have a HUGE variation in chromosome count. 44 and 32 respectively. :mrgreen:

[quote="Threnody"]Yup ^_^ Zebras have been separated for the longest of all living equid species so genetically they have developed further apart. Donkeys are kind of in the middle of the two but closer to zebras.

And Grevy's zebras are further genetically from Mountain and Plains zebras than domestic horses are to Przewalski horses. The Grevy's is even in a different subgenus than the other 2 zebra species. And then to top it all off the Plains and Mountain zebras who are in the same subgenus have a HUGE variation in chromosome count. 44 and 32 respectively. :mrgreen:[/quote]
*head explodes* :lol:

But back to the original question: they are in fact invisible with black and white stripes. :geek: :razz:

Actually, they do not exist at all, we are merely imagining them...... ymwhisle

[quote="rabbitsfizz"]Actually, they do not exist at all, we are merely imagining them...... ymwhisle[/quote]
:rofl

Imaginary zebras are part of the family classification [i]Equus fictus[/i] with their close cousin the invisible pink unicorn ;-)

:rofl :rofl :lol: :bounce

I have some of them.
I keep them with my foal that was 12" high at birth, my four year old that is 25" high and my Dobe without Spondiolytis!!!
I feed them all on fairy dust......