Sire Splash White Buckskin on dam Paint Black
In this article, we will explore the genetic possibilities of coat colors for the crossing between a stallion Splash White Buckskin and a mare Paint Black. Equine genetics is a universe of combinations where dominant and recessive alleles determine the final coat of each individual.
On one side, we have the stallion Splash White Buckskin. Genetically, it presents the base genotype E/_ A/_ Cr/n Sw2/n. The gene (Sw1) acts on the base coat color and imparts well-defined white markings, mainly on the face and limbs. Many individuals inherit blue eyes. This coat is based on Buckskin.
On the other side, the mare Paint Black contributes with its genetics based on E/_ a/a To/n. The (To) gene acts on the base coat forming large, well-defined white patches across the body and legs. Many cases also inherit blue eyes. This coat is based on Black.
Quando combinamos esses códigos genéticos, criamos uma matriz de probabilidades. É importante lembrar que o resultado visual (fenótipo) muitas vezes esconde genes recessivos que podem pular uma geração.
The Genotypes Involved
For a horse to have the coat Splash White Buckskin. it carries specific gene combinations. The possible genotypes for the sire include variants such as: E/E A/A Cr/n Sw2/n, E/E A/A Cr/n Sw2/Sw2, E/E A/a Cr/n Sw2/n, E/E A/a Cr/n Sw2/Sw2, E/e A/A Cr/n Sw2/n, E/e A/A Cr/n Sw2/Sw2, E/e A/a Cr/n Sw2/n, E/e A/a Cr/n Sw2/Sw2.
As for the dam, being Paint Black, may present in its DNA the alleles: E/e a/a To/n, E/e a/a To/To, E/E a/a To/n, E/E a/a To/To.
Understanding the Alleles
To understand the result of this crossing, note the gene sets at play:
- E/ (Extension - Dominant): The Extension gene controls eumelanin (black) production. At least one E allele allows the horse to have black hairs.
- A/ (Agouti - Dominant): The Agouti gene controls black distribution. The A allele restricts black pigment to the points (mane, tail, legs).
- a/a (Non-Agouti - Recessive): Allows black pigment to spread uniformly across the body. Essential for Solid Black (if E/).
- Cr/n (Heterozygous Cream): One copy of the dilution allele. Lightens red pigment to gold (e.g. Palomino, Buckskin).
- To/ (Tobiano): Dominant gene for vertical white patches crossing the back.
- Sw2/ (Splash White): Manchas brancas que sobem das partes inferiores do cavalo, frequentemente associadas a olhos azuis.
Calculated Probabilities
Being the sire Splash White Buckskin with genotype (E/E A/A Cr/n Sw2/n), it transmits the (E) allele to 100% of offspring, enabling black pigment production (eumelanin) and transmits the (A) allele to 100% of offspring, restricting black pigment to the extremities and has a 50% chance of transmitting the Cream dilution allele (Cr) and tem 50% de chance de transmitir o alelo Splash White (Sw2).
Being the sire Splash White Buckskin with genotype (E/E A/A Cr/n Sw2/Sw2), it transmits the (E) allele to 100% of offspring, enabling black pigment production (eumelanin) and transmits the (A) allele to 100% of offspring, restricting black pigment to the extremities and has a 50% chance of transmitting the Cream dilution allele (Cr) and sempre transmite o alelo Splash White (Sw2).
Being the sire Splash White Buckskin with genotype (E/E A/a Cr/n Sw2/n), it transmits the (E) allele to 100% of offspring, enabling black pigment production (eumelanin) and transmits the (A) allele (restriction) to 50% and the (a) allele (no restriction) to the other 50% and has a 50% chance of transmitting the Cream dilution allele (Cr) and tem 50% de chance de transmitir o alelo Splash White (Sw2).
Being the sire Splash White Buckskin with genotype (E/E A/a Cr/n Sw2/Sw2), it transmits the (E) allele to 100% of offspring, enabling black pigment production (eumelanin) and transmits the (A) allele (restriction) to 50% and the (a) allele (no restriction) to the other 50% and has a 50% chance of transmitting the Cream dilution allele (Cr) and sempre transmite o alelo Splash White (Sw2).
Being the dam Paint Black with genotype (E/e a/a To/n), it transmits the (E) allele (black factor) to 50% and the (e) allele (red factor) to the other 50% and transmits the (a) allele to 100% of offspring, allowing black to spread in homozygosis (if Extension is present) and has a 50% chance of transmitting the Tobiano allele (To).
Being the dam Paint Black with genotype (E/e a/a To/To), it transmits the (E) allele (black factor) to 50% and the (e) allele (red factor) to the other 50% and transmits the (a) allele to 100% of offspring, allowing black to spread in homozygosis (if Extension is present) and always transmits the Tobiano allele (To).
Being the dam Paint Black with genotype (E/E a/a To/n), it transmits the (E) allele to 100% of offspring, enabling black pigment production (eumelanin) and transmits the (a) allele to 100% of offspring, allowing black to spread in homozygosis (if Extension is present) and has a 50% chance of transmitting the Tobiano allele (To).
Being the dam Paint Black with genotype (E/E a/a To/To), it transmits the (E) allele to 100% of offspring, enabling black pigment production (eumelanin) and transmits the (a) allele to 100% of offspring, allowing black to spread in homozygosis (if Extension is present) and always transmits the Tobiano allele (To).
Based on a standard scenario, the statistical chances for foals from this crossing are:
Paint Splash White BuckskinOpen Coat ➜ 7,6%
Paint BuckskinOpen Coat ➜ 7,6%
Splash White BuckskinOpen Coat ➜ 7,6%
BuckskinOpen Coat ➜ 7,6%
Paint Splash White BayOpen Coat ➜ 6,8%
Paint BayOpen Coat ➜ 6,8%
Splash White BayOpen Coat ➜ 6,8%
BayOpen Coat ➜ 6,8%
Paint Splash White Smoky BlackOpen Coat ➜ 3,3%
Paint Smoky BlackOpen Coat ➜ 3,3%
Splash White Smoky BlackOpen Coat ➜ 3,3%
Smoky BlackOpen Coat ➜ 3,3%
Paint Splash White BlackOpen Coat ➜ 3,3%
Paint BlackOpen Coat ➜ 3,3%
Splash White BlackOpen Coat ➜ 3,3%
BlackOpen Coat ➜ 3,3%
Paint Splash White PalominoOpen Coat ➜ 1,6%
Paint PalominoOpen Coat ➜ 1,6%
Splash White PalominoOpen Coat ➜ 1,6%
PalominoOpen Coat ➜ 1,6%
Paint Splash White ChestnutOpen Coat ➜ 1,6%
Paint ChestnutOpen Coat ➜ 1,6%
Splash White ChestnutOpen Coat ➜ 1,6%
ChestnutOpen Coat ➜ 1,6%
Paint Splash White Dark BrownOpen Coat ➜ 0,8%
Paint Dark BrownOpen Coat ➜ 0,8%
Splash White Dark BrownOpen Coat ➜ 0,8%
Dark BrownOpen Coat ➜ 0,8%
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