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Name Gene
*Theoretical

Basic


Agouti A
Wild Agouti A+
"Brown" Agouti At
Black/Red Factor E

Dilution


Cream Cr
Champagne Ch
Pearl Cp
Dun D or Dn
Silver Dapple Z

Modifiers


Pangare/Mealy Pa
*Sooty STY
*Flaxen F

Masking


Grey G
White W

Roaning


"True" Roan Rn
*"Frosty" Roan Fs
Rabicano/White Ticking Rb

White Spotting Patterns


Tobiano To
Frame Overo Fr
Sabino Sb or Sb1
Splash Spl
Appaloosa Lp
BEING EDITED/UNDER CONSTRUCTION
Helpful Sites
[link] - Horse Color.com

References


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Credits

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:iconjnferrigno:
JNFerrigno Featured By Owner Jul 9, 2011
Other colors would be

Champagne : Ch
Dun : Dn (or just D so long as people know you're calling it Dun and not Dilute, because in other animals D is for Dilute)
Flaxen : (doesn't have a single gene, is thought to be polygenic, but some people just use F to show the horse can pass on Flaxen)
Grey : G
Overo : (specifically Frame Overo) can be denoted as O or F, I tend to stick with O because it's more universal among other horses people.
Pangera/Mealy : Pa (believe this is a theory as well, I don't think there is a test for it)
Roan : Rn
(you can add Rb for Rabicano, but Rabicano is unknown, and breeders don't really know how it's inherited or expressed completly)
Sabino : Sb1 (or just Sb for now. Only one test is out there for Sabino, but it's believed that Sabino has different expressions depending on breeds)
Splash : Spl (currently no test for it, how it's inherited is still open for debate)
Tobiano : To
White : W (dominate white. As of this point there have been I think 12 - or more- scientifically identified mutations of White. It is not grey, and not a dilution. It's a pattern, and some times unstable.)

And thats all I can think of off the top of my head, I feel like I missed some things, but I don't have my books infront of me.
Reply
:iconjnferrigno:
JNFerrigno Featured By Owner Jul 9, 2011
o_O I hit something and it sent twice. Grr. Alright picking up where I left off with cream.

The thing with Cp is that depending on who you talk to, it's Cp or P. The idea is that P is a mutation of Cream and that because it's a mutation it can only inherit two copies of one allele. So far the horses tested or bred, do not show to be CC/Pp, Cc/PP, or CC/PP.

So the idea is that they are not two independent alleles but actually two mutations on the same allele. So a Cream/Pearl horse can be Cc/Cp.

But the catch is that a homozygous Pearl horse looks like a homozygous cream horse, or even a champagne horse. And a Cream/Pearl horses looks like a homozygous Cream horse.

Sorry it's late and I may confuse you but I did a detailed article on Pearl here [link]
Reply
:iconjnferrigno:
JNFerrigno Featured By Owner Jul 9, 2011
Alright well for starters I would get right of the | between alleles. It makes it super confusing when writing it. Some places you'll see it written as A/a, E/e with a (,) comma separating the groups of alleles.

If anything I say doesn't make sense, I have some articles I wrote on DA which may explain further: [link] and if you're still stumped just ask.

I'm just going to give you the simple stuff, not all the new mutations and theory's discovered. Things that are theoretical I will note.

The Basics
Alleles: E
E : Black
e : Red (Chestnut/non-black)

Pairings
EE : homozygous for Black, can never have a Chestnut-Based offspring.
Ee : heterozygous for Red, can produce Chestnut-Based offspring.
ee : homozygous for Red, foals will always inherit one copy of (e).

Alleles: A
A+ : Extreme Restriction of Black, Wild Bay
A : Normal Restriction of Black, Standard Bay
At : Very Weak Restriction of Black, Brown (also called seal brown)
a : Does not Restrict Black

So an Ee/aa will be black, while an Ee/Aa horse will be Bay because A+, A, and At all restrict the expression of black on a horse.

Alleles: Cream
C : cream dilute
c : normal color
Cp : Pearl

A Cc horse is a single cream (Palomino, Buckskin, Smoky Black/Brown)
A CC horse is a double cream (Cremello, Perlino, Smoky Cream)
Reply
:iconjnferrigno:
JNFerrigno Featured By Owner Jul 9, 2011
Alright well for starters I would get right of the | between alleles. It makes it super confusing when writing it. Some places you'll see it written as A/a, E/e with a (,) comma separating the groups of alleles.

If anything I say doesn't make sense, I have some articles I wrote on DA which may explain further: [link] and if you're still stumped just ask.

I'm just going to give you the simple stuff, not all the new mutations and theory's discovered. Things that are theoretical I will note.

The Basics
Alleles: E
E : Black
e : Red (Chestnut/non-black)

Pairings
EE : homozygous for Black, can never have a Chestnut-Based offspring.
Ee : heterozygous for Red, can produce Chestnut-Based offspring.
ee : homozygous for Red, foals will always inherit one copy of (e).

Alleles: A
A+ : Extreme Restriction of Black, Wild Bay
A : Normal Restriction of Black, Standard Bay
At : Very Weak Restriction of Black, Brown (also called seal brown)
a : Does not Restrict Black

So an Ee/aa will be black, while an Ee/Aa horse will be Bay because A+, A, and At all restrict the expression of black on a horse.

Alleles: Cream
C : cream dilute
c : normal color
Cp : Pearl

A Cc horse is a single cream (Palomino, Buckskin, Smoky Black/Brown)
A CC horse is a double cream (Cremello, Perlino, Smoky Cream)
Reply
:iconjnferrigno:
JNFerrigno Featured By Owner Jul 9, 2011
There's a lot of incorrect information there, I would love to help you get back on the ball.
Reply
:iconcastawaywish:
CastawayWish Featured By Owner Jul 9, 2011  Student Digital Artist
I would love the help! This was when I first learned how to use genetics. I also was very busy at the time, but I should not be making excuses.
Reply
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