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overo x tobiano..

This is a discussion on overo x tobiano.. within the Horse Colors and Genetics forums, part of the Horse Breeds, Breeding, and Genetics category

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        03-24-2013, 02:22 PM
      #11
    Trained
    First of all, start googling horses based on individual color patterns and you'll the range of expression that each gene shows. Chiilaa has a folder full of saved photos of examples of horses that don't follow the "rules" set forth by their gene. Like a pair of completely solid horses..homozygous for splash. Or these two are both frame positive:

    Spice, owned by a forum member, only has a star.


    And my own mare, who only has a white pastern other than her blaze:


    Second, don't use the word "tovero." It's downright heresy. It's a word made up by the APHA for a color they couldn't be bothered to describe full out. Same with overo. Overo consists of frame, splash, and sabino, all of which act differently, but they just use it in the sense of "anything that isn't tobiano." Tovero is used for tobiano + 1 or more overo gene.

    She's just overo. I would guess frame and splash, maybe sabino the way the black is still covering the eyes. Just because her sire was tobiano plus some overo gene(s) doesn't mean she necessarily inherited it. Unless a parent is homozygous, the offspring only has a 50% chance of inheritance for each gene. She would also be bald faced. Bald faced just refers to anything wider than the average blaze to an entirely white head.

    And none of us have taken genetics classes really, at least not specific equine genetic classes to my knowledge. I haven't. I'm a junior equine science major (though really a freshman in my actual major due to major change) and have already proven to be more versed in color genetics than a couple of the department professors. We have just done a lot of reading and research.
    Peppy Barrel Racing and toto like this.
         
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        03-24-2013, 03:24 PM
      #12
    Started
    Lol posiedon, you and ND, and chiilaa are my color professors for learning ! And hurray I was right about the splash and frame. I'm getting better at those pesky white patterns.
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        03-24-2013, 03:34 PM
      #13
    Trained
    It's weird once you get used to picking them apart and now, instead of seeing a horse as a colored horse, I see all of the layers of color separately.
         
        03-24-2013, 03:42 PM
      #14
    Started
    Quote:
    Originally Posted by Poseidon    
    It's weird once you get used to picking them apart and now, instead of seeing a horse as a colored horse, I see all of the layers of color separately.
    Yes I'm getting better at picking them apart and seeing how they interact with each other. Feels good!
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        03-24-2013, 09:00 PM
      #15
    Banned
    Whats, spices color? Grulla? She looks like a big ol girl!! Lol.

    I also love your horses face!! Very friendly looking, lol.

    Ill just have to stalk the color genetics forum and learn somethin.
         
        03-24-2013, 09:11 PM
      #16
    Trained
    Spice appears grullo, but I would wonder if she would test positive for At, but be so dark that the rest of her body appears black. There are plenty of browns so dark that their only giveaway is a lighter muzzle.

    And I believe that is one of only a handful of pictures I have of Abby looking like a friendly, approachable horse, to be honest. She's very..exasperated often. She would happily live without humans while bossing around her posse. She's not out with her actual friends (one of whom has moved anyway) anymore, but has accepted Kaja well enough as a buddy. She hates the geldings she lives with, even though one is hopelessly in love with her. Abby has a serious Abbytude, as seen here:

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        03-24-2013, 09:16 PM
      #17
    Trained
    Chiilaa and I decided that Spice would test positive for brown I believe.
         
        03-25-2013, 10:08 AM
      #18
    Foal
    I'd love to see the solid horses that test homozygous for splash. Which version 1 2 or 3?
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        03-25-2013, 10:31 AM
      #19
    Green Broke
    Quote:
    Originally Posted by riddlemethis    
    I'd love to see the solid horses that test homozygous for splash. Which version 1 2 or 3?
    Posted via Mobile Device
    I am fairly sure you have seen them already - the Gotlands that have produced SW1/SW1 foals. Here is one of them:

         
        03-25-2013, 10:39 AM
      #20
    Foal
    Ah yes. Those I've seen. But I thought they had tested heterozygous not homozygous.
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