Can tobianos have frame? - Page 5
 
 

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Can tobianos have frame?

This is a discussion on Can tobianos have frame? within the Horse Colors and Genetics forums, part of the Horse Breeds, Breeding, and Genetics category
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    06-10-2012, 12:31 AM
  #41
Yearling
I'm quickly getting to that point myself.. A full night's sleep is looking mighty good right about now! :)
     
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    06-10-2012, 01:04 AM
  #42
Trained
Quote:
Originally Posted by ladytaurean515    
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.
     
    06-10-2012, 12:39 PM
  #43
Yearling
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..
     
    06-10-2012, 12:51 PM
  #44
Weanling
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.
     
    06-10-2012, 12:52 PM
  #45
Trained
Heterozygous is one copy of a gene. Homozygous is two.
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    06-10-2012, 12:53 PM
  #46
Trained
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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    06-10-2012, 12:53 PM
  #47
Weanling
Punnett square - Wikipedia, the free encyclopedia
This is how I learned in college on determining genes of offspring
     
    06-10-2012, 12:54 PM
  #48
Weanling
That is what that pink shows Nd, I didnt word it right but the link I added talks about the single and double gene
     
    06-10-2012, 12:55 PM
  #49
Weanling
A homo will always be two capital letters
     
    06-10-2012, 01:00 PM
  #50
Trained
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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