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Dilution genes

Dilution genes do to the red and black pigments what adding white, or water, to paint, does.  There are several different kinds of dilutions:

An underline " _ "  next to a gene means it doesn't matter what the other one with it is, the results are the same.

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Dun

bulletGrullo: E_ + aa + D_
bulletDun: E_ + A_ + D_
bulletBrown Dun: E_ + Ata or AtAt + D_
bulletRed Dun: ee + any A or a + D_

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Cream

bulletPalomino: ee + any A or a + Crcr (red + one cream and one non-cream gene)
bulletCremello: ee + any A or a + CrCr (red + two cream genes)
bulletBuckskin: E_ + A_ + Crcr (bay + one cream gene)
bulletPerlino: E_ + A_ + CrCr (bay & two cream genes)
bulletSmoky Brown: E_ + AtAt or Ata + Crcr (brown + one cream gene)
bulletBrown Cream: E_ + AtAt or Ata + CrCr (brown + two cream genes)
bulletSmoky Black: E_ + aa + Crcr (black + one cream gene)
bulletSmoky Cream: E_ + aa + CrCr (black + two cream genes)

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Champagne

bulletClassic: E_ + aa + Ch_
bulletAmber: E_ + A_ + Ch_
bulletGold: ee + any A or a + Ch_
bulletChampagne Cream: any of the above + Crcr or CrCr

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Pearl -  this rare gene is found only in a few breeds: the American Paint, Andalusian, Lusitano and the Pasos.  It's recessive, probably a mutation of cream, and interacts with cream.  It does not interact with dun.

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Silver

bulletis a dominant gene (Z)
bulletdilutes black manes & tail color to anything from pewter to flaxen; sometimes only partially
bulletdilutes black body color to a dark chocolate color
bullethas no apparent effect on red pigment

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Double Mixed Dilutions

bulletdun + 1 cream gene
bulleton red: "dunalino", "line-back Palomino", "yellow dun"; looks like a Palomino with dun markings, which are usually chestnut in color.  Dorsal may continue through center of mane & tail.
bulleton bay: "dunskin", "buttermilk dun", in Kigers may be called "claybank" though this otherwise means light red dun.
bulleton black: "golden grullo" (?), "silver grullo"
bulletdun + 2 cream genes
bulleton red: cremello dun;  markings may be invisible to the naked eye
bulleton bay: perlino dun;  markings tan, pewter or yellow
bulleton black: smoky cream dun; markings a bit darker than on perlino dun
bulletdun + champagne
bulleton red: gold dun
bulleton bay: amber dun
bulleton seal brown: sable dun
bulleton black: classic dun
bullet1 cream + champagne
bulleton red: gold cream
bulleton bay: amber cream
bulleton seal brown: sable cream
bulleton black: classic cream

And so on.  This last list is not exhaustive, as you can well imagine.  See also:

horsecolor.com -- general horse color information

newdilutions.com - pearl and searching for even "newer" dilutions

ICHRegistry.com - the champagne color registry

(all by this same webmaster)

 

 


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This web site created with delight by Hippo-Logistics
© 2007 Barbara A. Kostelnik