🪽 White Patterns

Tobiano (TO)

Tobiano is a dominant white pattern gene that creates smooth, rounded white patches that often cross the topline.

Inheritance & Expression

Characteristics

• Rounded white patches
• White legsWhite crossing over the topline
• Dark head with normal facial markings

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Splashed White (SW)

Characteristics

• Crisp-edged white markings
• High white legs
• White underside
• Blue eyes are common

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Sabino (SB)

Characteristics

• Jagged, irregular white markings
• High uneven white legs
• Wide blaze or extensive facial white
• Brown eyes are common

 

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Frame Overo (O)

Characteristics

• Irregular, jagged white patches
• White rarely crosses the topline
• Small leg markings are common
• White is concentrated on the sides and neck

Since O/O is lethal, there is no expressive category for homozygous horses because they won't survive.

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Tovero

Tovero is not a separate gene. A Tovero horse inherits both Tobiano and Overo pattern genes.

Characteristics

• Combination of tobiano and overo traits
• White crossing the topline
• Irregular body markings
• Blue eyes are common
• White is concentrated on the sides and neck

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KIT White (W20)

KIT White, also known as W20, is a white-enhancing gene that influences the amount of white a horse displays. In EquestriCraft, W20 works alongside facial markings, leg markings, and white pattern genes to determine overall white expression.

Unlike Tobiano, Sabino, or Splashed White, W20 does not create a specific pattern on its own. Instead, it increases the amount of white that may be expressed throughout the horse.

Inheritance

Genotype	Expression
W20/W20	Extensive White
W20/n	Medium White
n/n	Minimal White

Expression

n/n (Minimal White)

Horses without W20 will typically display only small amounts of white.

Examples:

• Star
• Snip
• Crescent
• Coronet bands
• Fetlocks
• Small socks
• None

W20/n (Medium White)

Horses carrying one copy of W20 may display moderate white expression.

Examples:

• Blaze
• Stripe
  
• Strip
• Tall socks
  
• Moderate body white

W20/W20 (Extensive White)

Horses carrying two copies of W20 may display extensive white markings.

Examples:

• Bald face
  
• Large Blaze
• Stockings
• Large belly spots

Interaction With Other White Pattern Genes

W20 can enhance the expression of other white pattern genes such as:

• Tobiano (TO)
• Frame Overo (O)
• Sabino (SB)
• Splashed White (SW)

A horse carrying both W20 and another white pattern gene may display significantly more white than a horse with the same pattern but without W20.

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Leopard Complex (LP)

LP determines whether a horse can display Appaloosa characteristics.

Inheritance

PATN1

PATN1 controls how much white patterning develops.

Example Outcomes

Roan (RN)

Roan is a dominant pattern gene that mixes white hairs evenly throughout the body while typically leaving the head and lower legs darker.

Inheritance

Rabicano (Rb)