How dominant are Friesian genes?
   

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How dominant are Friesian genes?

This is a discussion on How dominant are Friesian genes? within the Horse Colors and Genetics forums, part of the Horse Breeds, Breeding, and Genetics category
  • Are fresians homozygous black
  • Fox friesian

 
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    04-12-2011, 04:24 PM
  #1
Foal
How dominant are Friesian genes?

We have a light red dun QH mare expecting a foal with a (presumably purebred) Friesian sire. I don't know anything else about their backgrounds.

Does anyone know how dominant the Friesian black is, and what the possibilities for this foal might be? I'll love him either way, this is more just to kill the time while we wait. :)

Thanks!
     
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    04-12-2011, 04:45 PM
  #2
Weanling
25% black
25% grulla
25% bay dun
25% bay

Assuming he is heterozygous for black... I would assume most
Would be with all the black to black breedings... But if not black is rven less likely, and red is on the table.... I think
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    04-12-2011, 04:49 PM
  #3
Trained
Quote:
Originally Posted by christabelle    
25% black
25% grulla
25% bay dun
25% bay

Assuming he is heterozygous for black... I would assume most would be with all the black to black breedings... But if not black is rven less likely, and red is on the table.... I think
Posted via Mobile Device
Not all Frisians are homozygous black. There are red or "fox" Frisians.

Without knowing if the stud was/is homozygous or heterozygous and without knowing the mare's agouti status since she is red... You could end up with about anything.

16.67% - Grullo
16.67% - Black
16.67% - Bay Dun
16.67% - Bay
16.67% - Red Dun
16.67% - Chestnut
     
    04-12-2011, 05:46 PM
  #4
Yearling
Quote:
Originally Posted by christabelle    
25% black
25% grulla
25% bay dun
25% bay

Assuming he is heterozygous for black... I would assume most
Would be with all the black to black breedings... But if not black is rven less likely, and red is on the table.... I think
Posted via Mobile Device

Just curious, do you mean homozygous? Black to black breeding would mean a homozygous foal for black.. Just saying.

Though I'm going to agree with the other posting. We know nothing about the sire or dam so she could end up with pretty much anything.
     
    04-12-2011, 05:48 PM
  #5
Trained
Ladybug, black to black breeding does not guarantee a black foal if both sire and dam are heterozygous (Ee) for black.

Homozygous (EE) bred to anything is going to guarantee that the foal will be black based.
     
    04-12-2011, 06:18 PM
  #6
Weanling
Yup, my bad... Lol. I should read what I type eh? Interesting that some Fresians carry red though.. I would think they would all be homozygous. Thanks!
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    04-12-2011, 09:49 PM
  #7
Trained
Red (or "fox") Friesians aren't commonly seen because they are usually not able to be registered to preserve the breed characteristic of black horses and therefore not approved for breeding anything other than random grade horses. I would love to have a fox Friesian.
     
    04-13-2011, 05:08 AM
  #8
Foal
Interesting, thanks everyone! I guess we'll just have to wait and see. I'm really not hoping for anything over any other, and it sounds like that's a good thing in this case. We'll find out within the next couple of weeks.

There's a chance that the sire's not even Friesian as the mare was bought at auction in foal. Her original owners said the sire was a yearling Friesian they thought was too young to do it, but who knows, really.

Can't wait!
     

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