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December 12, 2012
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Fawn Gene and Variants by Ehetere Fawn Gene and Variants by Ehetere
:iconfawnlings:




Note: This pattern variation is not free to create on existing fawnlings and may only be received through special group auctions, gifts and foals (from parents with the colouration). The variation extends the fawn gene to cover all sorts of deer patterns, and NOT horse markings. Horse white patterns do not exist within the breed.

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1) Restrictive fawn fwfw/(nRx/RxRx/Rxrz)
2) Restrictive fawn fwfw/(nRx/RxRx/Rxrz)
3) Restrictive fawn fwfw/(nRx/RxRx/Rxrz)
4) Partial Restrictive fawn fwfw/(nrz)
5) Restrictive fawn fwfw/(nRx/RxRx/Rxrz)
6) Partial Restrictive fawn fwfw/(rzrz)
7) Restrictive fawn fwfw/(nRx/RxRx/Rxrz)
8) Restrictive fawn fwfw/(nRx/RxRx/Rxrz)


The Fawn Gene
The fawn gene is a recessive gene represented by fw (fwfw in its expressive form) where pale countershading and spots can be found on the torso of the fawnling. The edges are soft and faded, with markings varying from white to a few shades paler than the base coat. The fawn gene is dominant over the smoky fawn gene.

The Smoky Fawn Gene
The smoky fawn gene produces faded countershading similar to pangare, only usually a darker shade than the base coat. This is not a rule however, as it has been known to produce lighter fading on some coats (never more than a few shades lighter than the base coat), usually on colours where dark shading would not be seen (eg. black). The smoky fawn gene does not have any spots (and thus there is no difference in its expression of the fawn variants Rx and rz, see below) though dappling may appear. The gene is represented by fws and requires two copies to express (fwsfws).



A new variation in the fawn gene has been discovered, where fawn spotting fades away in adults leaving only pale countershading.

New Markings
This new fawn gene variation can cause both defined and faded countershading, or a combination of the two. Fawn spots may also still remain, or not fade completely in some areas. Markings include pale fur around the eyes, ears, muzzle, forehead, legs, underbelly and tail. Darker countershading along the back and on the head and ears is also associated with this variation. Markings can vary in hue from white to a few shades lighter than the base coat, though white to pale cream is most common. This fawn variation can range from very minimal with almost no expression of the gene (restricted to the face) to more extensive areas of pale fur.

New Genes
In addition to having the fwfw or fwfws genetic code, fawnlings who display these colour patterns will also have another gene, depending on their expression. Both the Rx and rz genes fall on the same locus, with the Rx gene being dominant over the rz gene. The genes may be combined in a number of ways, similar to how wild bay is dominant over seal bay.

The Rx Gene
The Restrictive Expression gene, or Rx, is the gene whereby fawn spots fade away and solidifies faded areas of fur to defined patterns. Fawnlings displaying this pattern will have no fawn spots, and a varying array of white expression, not influenced by homozygous or heterozygous forms.

The Rz Gene
The Partial Restrictive gene, or rz, is the gene which solidifies white patterns, however only partially restricts fawn markings. Fawnlings with this gene will either partially or totally express fawn markings as well as solid white patterns, depending on homozygous or heterozygous forms. nrz or heterozygous will have partial fawn spot coverage, often faded. rzrz or homozgyous will have complete fawn spotting and complete white markings. Partial Restrictive is recessive to Restrictive Expression, and will not show if there is a Rx gene present.

Examples:
fwfw/nRx = Restrictive Expression (no spots)
fwfws/Rxrz = Restrictive Expression (no spots)
fwfw/nrz = Partial Restrictive (minimal spotting)
fwfw/rzrz = Partial Restrictive (complete fawn spotting)
fwsfws/nrz = Partial Restrictive, Smoky Expression (dark markings)

As stated above, the Restrictive genes also work with the smoky fawn expression, however these markings are dark instead of light.
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:iconcrimson-forest-farm:
Crimson-Forest-Farm Featured By Owner Dec 13, 2013  Hobbyist Digital Artist
I have a question about Smokey Fawn, since it seems so rarely used :)

If I have a very light colored fawnling (such as a pally, cremello, greyed out, etc) and a fwsfws

Can the smokey fawn be black?
So a pally with black fawn markings?
or would it be a dark brown?



thank you for your time




Reply
:iconehetere:
Ehetere Featured By Owner Dec 13, 2013  Hobbyist Digital Artist
Typically the more diluted the coat the more diluted the markings, so smoky fawn on a pale fawnling is only a few shades darker at most, usually it shows up as a light colour on most.
Reply
:iconcrimson-forest-farm:
Crimson-Forest-Farm Featured By Owner Dec 13, 2013  Hobbyist Digital Artist
Ok thank you :)
Reply
:iconkl-sincerity:
KL-Sincerity Featured By Owner Dec 12, 2013  Hobbyist Artist

I just want to make sure I get this right... I'll be (eventually) getting a breeding between Anubis and  Igétis, and I'm just playing around with the possible genotypes of the baby (I love doing that haha). 

I do have a question though. Anubis is fwfw / nrz, while Igé doesn't have any fawn genes. Since the fawn gene is recessive dominant, that means I won't have any possible fawn genes in the baby, right? Or is it still possible?

:( Just making sure, haha.

Also, while I'm asking about genes... horses have multiple agouti genes - At results in Seal Brown and A+ results in Wild Bay, while A is simply bay.

Anubis has AA, while Igé has Aa. I'm wondering - are you able to produce At or A+ from a normal A gene?

Thanks!

Reply
:iconehetere:
Ehetere Featured By Owner Dec 12, 2013  Hobbyist Digital Artist
If both parents don't at least carry the fawn gene, then no fawn markings for baby (though it's babies might have some!)

And nope, those work like horse agouti genes. You have to have A+ or At in the parent's genetics to get them in the baby ;)
Reply
:iconkl-sincerity:
KL-Sincerity Featured By Owner Dec 13, 2013  Hobbyist Artist
Thanks!

Since I've got your attention...

How the heck do you make sooty markings in Photoshop? 

I specifically have CS6, but that doesn't matter to me. I'm having SO MUCH trouble designing a fawn because I can't get the sooty markings to look right! Hah ):
Reply
:iconehetere:
Ehetere Featured By Owner Dec 13, 2013  Hobbyist Digital Artist
I never use photoshop 8D Paint tool SAI all the way, but usually I just draw circles at low opacity >.>
Reply
:iconkl-sincerity:
KL-Sincerity Featured By Owner Dec 13, 2013  Hobbyist Artist
You draw all the little tiny circles separately? 0__0
Reply
:iconehetere:
Ehetere Featured By Owner Dec 13, 2013  Hobbyist Digital Artist
I scribble them - I'm the laziest person on the planet :XD:
Reply
:iconkl-sincerity:
KL-Sincerity Featured By Owner Dec 14, 2013  Hobbyist Artist
But yours look so good!
Reply
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