Can tobianos have frame? - Page 5 - The Horse Forum

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post #41 of 56 Old 06-09-2012, 11:31 PM
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I'm quickly getting to that point myself.. A full night's sleep is looking mighty good right about now! :)
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post #42 of 56 Old 06-10-2012, 12:04 AM
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Originally Posted by ladytaurean515 View Post
I seen though in your thread..the stallion you have considered for breeding if you do...has he been tested? If he is - for frame it shouldnt matter if yours carries it...I believe to get a LWO both parents must at least be heter and carry the frame gene.
A frame positive horse can ONLY be heterozygous. Homozygous frame is lethal, hence the "lethal white syndrome" name. If you breed an N/O horse to an N/O horse you will have a 25% chance of an O/O foal..which is LWOS.

But yes, if the stallion has tested negative for frame, your mare's status won't matter. However, it is easier to test your mare and limit your options if she is N/O.
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post #43 of 56 Old 06-10-2012, 11:39 AM
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What's the difference between heterozygous and homozygous? I've had it explained to me before,but the explanation made no sense,so I don't think the person doing the explaining really knew for sure,lol..
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post #44 of 56 Old 06-10-2012, 11:51 AM
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country, heter means they carry often times as a hidden or recessive gene, ex(2 brown eyed parents BbXBb have a blue eyed child BB) means both parents had a recessive gene for blue eyes in their genes.Also means the offspring may carry it or show it as well. Homo means a dominant gene also could be hidden but will show up in offspring. I have a bay mare who is homo for black. She has had a black foal from a black stallion and a black foal from a bay heter black stallion.
http://en.wikipedia.org/wiki/Zygosity..this could help maybe.
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post #45 of 56 Old 06-10-2012, 11:52 AM
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Heterozygous is one copy of a gene. Homozygous is two.
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post #46 of 56 Old 06-10-2012, 11:53 AM
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Ladytauren that is incorrect. A gene doesn't have to be dominant or recessive in order to be heterozygous of homozygous.
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post #47 of 56 Old 06-10-2012, 11:53 AM
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Punnett square - Wikipedia, the free encyclopedia
This is how I learned in college on determining genes of offspring
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post #48 of 56 Old 06-10-2012, 11:54 AM
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that is what that pink shows Nd, I didnt word it right but the link I added talks about the single and double gene
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post #49 of 56 Old 06-10-2012, 11:55 AM
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a homo will always be two capital letters
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post #50 of 56 Old 06-10-2012, 12:00 PM
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Not true....

.ee << homozygous red

.Ee << heterozygous for black and red.

.EE << homozygous for black

(ETA had to put the . Before the letters as the forum capitalizes the first letter... not cool)
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