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Entries on 18-January 08

The Cream/Creme Gene

Posted by dream-catcher-ranch, Jan 18 2008, 01:26 PM

The Cream gene is a dilution gene that gives us our buckskins, palominos, smokey blacks, perlinos, cremellos, and smokey creams.

We show the presence of the cream gene with a Cr. The absence of the cream gene is cr. There IS a genetic test that shows the presence of the cream gene.

crcr = no dilution
Crcr = buckskin, palomino, smokey black = heterozygous
CrCr = perlino, cremello, smokey cream = homozygous (Double Dilute)

EEaa/Eeaa crcr = Black
EEaa/Eeaa Crcr = Smokey Black
EEaa/Eeaa CrCr = Smokey Cream

EEAa/EeAa/EEAA/EeAA crcr = Bay/Bood Bay/Black Bay/Brown
EEAa/EeAa/EEAA/EeAA Crcr = Buckskin/Smutty Buckskin
EEAa/EeAa/EEAA/EeAA CrCr = Perlino

eeAa/eeAa/eeAA/eeAA crcr = Chestnut/Sorrel/Flaxen Chestnut/Liver Chestnut
eeAa/eeAa/eeAA/eeAA Crcr = Palomino/Chocolate Palomino
eeAa/eeAa/eeAA/eeAA CrCr = Cremello

Cremellos will be a very light offwhite or Cream color with the same color or white mane and tail.

Perlinos will be a very light Cream color with more of an orange tint to the body and mane and tail - that orange tint indicates their mane and tail would otherwise have been black as in a buckskin (bay base coat) rather than white like that of the palomino (chestnut base coat).

Smokey Creams will be a very light offwhite or Cream color with more of a grayish or brown dirty tint or an orange tint to the body, mane, and tail. The smokey cream would otherwise have been a black or smokey black color.

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Comments

#1
Color Spot Sport Ponies, Apr 7 2008, 08:30 PM

Great research. I love the fact you have information on both the base coat colors and the creme gene. I have a simular breeding vision.

#2
Innishfael Johara :), Jun 4 2008, 11:42 AM

Hi. I'm new to this particular site, but I love the colored arabs too. I have a little filly who's 7/8ths arab and 1/8 paint. Her sire is Innishfael Dragon, an incredible tobiano colored stallion. My filly is just bay, but I'd love to breed her to a colored stallion someday to very possibly get something colored. Anyway, I just think it's all really cool and interesting! And the pics you put up of that one horse is super cool! It's like appy type coloring almost! Way pretty!

#3
lilham, Jul 29 2008, 11:16 PM

Hi,
Have a question, The double dilute is I assume the product of dilute to diluite breeding .ie palomino x palomino. I had someone comment earlier that a horse tested a high pecent homozygous but parents were palomino x bay. were they just pulling my leg or have I missed something recently?

#4
dream-catcher-ranch, Sep 22 2008, 02:58 PM

Hi, so sorry - thought I was supposed to get alerts of comments and such - have to check my settings but haven't been on here in a while.

Not sure if your question was ever answered by anyone else but -

double dilute can only be produced by two dilute parents such as the palomino x palomino. If the parents of the horse you mentioned were from bay x palomino then you only get the possible heterozygous dilute - no chance of homozygous if only one parent was a carrier of the cream gene. There is no "high percentage homozygous". You either have zero, one, or two genes when it comes to the cream gene and each parent can only contribute one gene. If the palomino conributed its cream gene then the resulting foal will either be palomino, buckskin, or smokey black because the bay didn't have a cream gene to contribute making the foal heterozygous for the cream gene. The two palomino scenario can produce a cremello (each parent contributed its cream gene for a double dilute), a palomino (only one parent contributed its cream gene while the other did not), or a chestnut (neither parent contributed its cream gene).

Hope that helps and sorry for the delayed response.