Minimally Spotted Tobianos
I'm curious as to what the color/genetic gurus out there can tell me about minimally spotted tobianos.
I have a mare,pictured below,that is out of a tobiano mare and by a solid stud.Along with her leg and face white,she has a white patch,roughly 3-4 sq. inches,on her belly.
Now,genetically speaking (if my brain is working right),she would have gotten a solid gene from her sire,since that's all he would have,and either a solid or a tobiano gene from her dam,since she would have had one of each. Correct?
The patch on her belly has me curious as to whether she may have gotten the tobiano gene from her dam and is just not really expressing it,or could it be from something else..
I highly doubt your mare is tobiano. It's more likely to be from sabino.
Getting a bit more technical, many 'solid' horses are minimally expressing different pinto genes. This is why you'll occasionally get crop outs that many people don't expect. Even horses that are blatantly displaying one pinto gene in particular, in the dams case tobiano often have something else going on.
Slipped tobianos often have lots of little ermine spots such as this
In this mares case I think she is splash and sabino IMO. She has the classic straight across sock on the back left and bottom heavy face white that is going off to the side. Sabino CAN cause roaning but it doesn't have to. Inthis case it's adding the points to her leg markings.
I agree no tobiano. Slipped tobiano's have a very definitive look about them, even when they don't have the ermines. I could see this mare maybe being minimal splash the socks on her legs are very smooth. She is probably sabino as well with that blaze and belly spot.
I used to own a slipped tobiano. She had lots of ermines.
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If the body white was caused by minimal tobiano, I would expect to see it along the topline somewhere - usually you see it on the tailhead, the shoulders, or on the crest of the neck. Body white on the belly says sabino or splash to me.
She has one or two chestnut ermine spots,and both dark and white skin under her leg white,with the dark skin from her color haloing into her white,dark skin running up from her hoof stripes, as well as random patches of dark skin.
I'm 99.9% sure she doesn't carry the gene,not 100% only because there's always exceptions out there,lol,but I do find it all quite curious and interesting. :)
Not uncommon for red based horses to have a few white hairs in their coat or mane/tail. You have a beautiful horse!
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