Coat formed by the combined effect of Paint and Gray on the Palomino base.
Typical Genetic Formula
e/e Cr/n To/n G/n
Possible Genotype Variations
e/e A/A Cr/n To/n G/n
e/e A/A Cr/n To/n G/G
e/e A/A Cr/n To/To G/n
e/e A/A Cr/n To/To G/G
e/e A/a Cr/n To/n G/n
e/e A/a Cr/n To/n G/G
e/e A/a Cr/n To/To G/n
e/e A/a Cr/n To/To G/G
e/e a/a Cr/n To/n G/n
e/e a/a Cr/n To/n G/G
e/e a/a Cr/n To/To G/n
e/e a/a Cr/n To/To G/G
The Genetic Basis
For a horse to be born Paint Gray Palomino, it must receive the following combination from its parents:
- To have the red base (Chestnut), this animal necessarily inherited a recessive (e) allele from the sire and another from the dam. Both parents carried the red factor.
- Its diluted color (golden/cream) results from different genes meeting: it received the dilution gene (Cr) from only one parent.
- Gray does not skip generations. For this animal to be Gray, the sire or dam had to be Gray to provide the (Rn).
- The Tobiano patches that characterize the Paint Horse were inherited from at least one parent.
Understanding the Alleles
The horse Paint Gray Palomino has a specific combination of alleles. Below, we explain each genetic component that forms this coat:
- e/e (Red Factor): The animal has a fundamentally red base (Chestnut), due to the total absence of black pigment.
- A/ (Agouti): The Agouti gene, when active (with E present), restricts black pigment to the extremities. Carried with no visual effect in e/e animals.
- a/a (Non-Agouti): Allows black to spread over the entire body when combined with E. In e/e animals it is invisible but still passed on.
- Cr/n (Cream): Single dilution of the Cream gene. Lightens red tones to golden.
- To/ (Tobiano): Vertical white patches crossing the back.
- G/ (Grey): Progressive graying. Epistatic — covers all other colors.
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