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HOMOZYGOUS BLACK


Whiz Be San Badger

Who Whiz It

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Haidas San Badger

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TERMINOLOGY RELATED TO COAT COLOR GENETICS:

GENE: The genetic coding or DNA sequences that determine horse coat color. These 'Genes' are located on strands of protein located in the nuclei of cells.

GENOTYPE: What the genes or specific genetic coding is.

PHENOTYPE: What the horse actually looks like.

HOMOZYGOUS/HETEROZYGOUS: Refers to the gene pairs at a specific location on the protein strand. If the genes are identical, they are Homozygous. If the genes are different, they are Heterozygous.


HOMOZYGOUS BLACK EXPLAINED:

Black And Red are the two basic pigment colors of the horse. Black is dominant. Red is recessive. The Black and Red pigment genes or the "E" Genes are symbolized as follows:

BLACK (DOMINANT):
EE - HOMOZYGOUS BLACK
Ee - HETEROZYGOUS BLACK

RED (RECESSIVE):
ee - HOMOZYGOUS RED

Each horse possesses one pair of "E" (Extension) genes or, basic pigment color genes. The offspring that result from the mating of two horses inherits one basic pigment color gene from each parent. Currently there is a DNA-based test called the Red Factor Test, which will determine which genes are present. See the VGL-UC DAVIS RED FACTOR TEST for additional information.

A Homozygous Black (EE) can only pass on the dominant "E" black gene, while the Heterozygous Black (Ee) is able to pass on either the dominant black gene "E" or the recessive red gene "e". A horse must inherit the recessive "e" gene from each parent to be red. Therefore, it is genetically impossible for a Homozygous Black to produce a red foal since there is no recessive red "e" gene to pass on.

Other coat color variations and shades of color occur as a result of the effects of separate, "modifying" genes located at other "spots" or "loci" on the DNA strand. For example, the "A" (Agouti) gene effects the expression of black coat color in horses at times. The "A" gene does not visibly effect red horses since there is no black pigment.


A (Dominant) - Causes the black pigment to be restricted to the points of the horse (mane, tail, legs) with red expressed across the rest of the body. The horse is Bay.

a (Recessive) - Does not restrict the black pigment. The black color is fully expressed across the entire body. The horse is black.

A Homozygous Black (EE) horse will always produce black offspring, not bay, when mated with a sorrell/chestnut whose sire and dam were both black. A black crossed with a black will always produce a black, not bay, if at least one parent is Homozygous Black (EE). If both sire and dam are Heterozygous (Ee), the chance of a black offspring is 75% with a 25% chance for red.

A homozygous black horse will never be able to produce any red based horse such as a sorrel, palomino, cremello, red dun etc.

More in depth information regarding Homozygous Black and Horse Coat Coloration can be found at UC DAVIS-HORSE GENETICS web site.



Colors Mixed

Buckskin
EE
Whizbe

Buckskin

Cremello

Perlino

Smoky Cream

Palomino

Smoky Black

Sorrel

Buckskin, Smoky black,  Bay, Black

Palomino, Buckskin, Smoky black Sorrel, Bay, Black

100% Palomino

Buckskin, Palomino, Smoky Black

Smoky black, Buckskin, Palomino

50% Palomino 50% Sorrel

Smoky Black, Buckskin, Palomino, Black, Sorrel, Bay

Bay

Buckskin, Smoky black, Bay, Black

Buckskin, Smoky black, Palomino Sorrel, Bay, Black

Buckskin, Palomino, Smoky black

Buckskin, Smoky Black, Palomino

Smoky black, Buckskin, Palomino

Palomino, Buckskin, Smoky black, Sorrel, Bay, Black

Buckskin, Smoky black, Palomino Sorrel, Bay, Black

Black

Buckskin, Smoky black,  Black, Bay

Buckskin, Smoky black, Palomino Black, Bay, Sorrel

Buckskin, Palomino, Smoky black

Buckskin, Smoky black, Palomino

Smoky black, Palomino

Palomino, Buckskin, Smoky black, Sorrel, Bay, Black

Smoky black, Palomino Black, Sorrel

Palomino

 Buckskin, Smoky black, Bay, Black,  Perlino, Smoky cream

Palomino, Buckskin, Smoky black, Sorrel, Bay, Black, Cremello, Perlino, Smoky cream

50% Palomino 50% Cremello

Palomino, Buckskin, Smoky black, Cremello, Perlino, Smoky cream

Smoky black, Buckskin, Palomino, Perlino, Cremello, Smoky Cream

50% Palomino, 25% Sorrel, 25% Cremello

Smoky black, Buckskin, Palomino, Black, Bay, Sorrel, Perlino, Smoky cream, Cremello

Buckskin

Buckskin,  Smoky Black, Bay, Black, Perlino, Smoky cream

Buckskin, Palomino, Smoky Black, Bay, Sorrel, Black, Perlino, Cremello, Smoky cream

Buckskin, Palomino, Smoky black, Cremello, Perlino, Smoky cream

Buckskin, Smoky black, Palomino, Perlino, Cremello, Smoky cream

Smoky black, Buckskin, Palomino, Perlino, Cremello, Smoky Cream

Palomino, Buckskin, Smoky black, Sorrel, Bay, Black, Cremello, Perlino, Smoky cream

Smoky black, Buckskin, Palomino, Black, Bay, Sorrel, Perlino, Smoky cream, Cremello

Smoky Black

Smoky black, Buckskin,  Black, Bay, Perlino, Smoky cream,

Smoky black, Buckskin, Palomino, Black, Bay, Sorrel, Perlino, Smoky cream, Cremello

Smoky black, Buckskin, Palomino, Perlino, Smoky cream, Cremello

Smoky Black, Buckskin, Palomino, Pelino, Smoky cream, cremello

Smoky black, Palomino, Cremello, Smoky Cream

Smoky black, Buckskin, Palomino, Black, Bay, Sorrel, Perlino, Smoky cream, Cremello

Smoky black, Palomino, Black, Sorrel, Smoky cream, Cremello

Cremello

Perlino, Buckskin, Smoky Cream, Smoky Black

Cremello, Perlino, Buckskin, Palomino, Smoky Cream, Smoky Black

Cremello

Cremello, Perlino, Smoky Cream

Cremello, Smoky Cream

Cremello, Palomino

Cremello, Palomino, Perlino, Buckskin, Smoky Cream, Smoky Black

Perlino

Perlino, Buckskin,  Smoky Cream, Smoky Black

Perlino, Buckskin, Cremello, Palomino, Smoky Cream, Smoky Black

Perlino, Cremello, Smoky Cream

Perlino, Cremello, Smoky Cream

Perlino, Cremello, Smoky Cream

Perlino, Buckskin, Cremello, Palomino, Smoky Cream, Smoky Black

Perlino, Buckskin, Smoky Cream, Smoky Black, Cremello, Palomino

Smoky Cream

Perlino, Buckskin, Smoky Cream, Smoky Black, 

Perlino, Buckskin, Smoky Cream, Smoky Black, Cremello, Palomino

Smoky Cream

Perlino, Smoky Cream, Cremello

Smoky Cream, Cremello

Perlino, Buckskin, Smoky Cream, Smoky Black, Cremello, Palomino

Smoky Cream, Smoky Black, Cremello, Palomino

 

 

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Hoppens farve 1 2 3 4 5 6 7 8
Grullo Smoky Grullo Smoky Black Dunskin Buckskin Dun Grullo Sort Bay
Dun Dunskin Buckskin Bay Dun Bay Smoky Grullo Smoky Black Grullo Black
Sort Smoky Black Buckskin Black Bay
Bay Buckskin Bay Smoky Black Black
Sorrel Buckskin Bay Smoky Black Black
Red Dun Dunskin Buckskin Bay Dun Bay Smoky Grullo Smoky Black Grullo Black

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