Magical gene / ground and strong white

Laciano

Tobiano and appaloosa at once: white gathered along the topline and thinning downward, spotting over the hindquarter, and a banded raccoon tail on every one of them. A third allele carries the same marking worked in greys instead of white - dark where the pale form is light, and the same number of steps.

What it can come out as

OutcomeCarrying
LacianoLac/Lac · Lac/Lcc · Lac/n · Lac/Lck
Black LacianoLck/Lck · Lck/Lcc · Lck/n
Coloured LacianoLcc/Lcc
Wild typeLcc/n · n/n

How each one is actually drawn - region by region, and the layers it is built from - is on the coding tab.

Crossing two of them

Finding one

About 1 in 893 wild horses is born showing this. That is the whole of the supply: catch one, or make one with the carrot below. Breeds set their own pools and a breed built around this gene will carry it far more often than the wild population does.

Wild pairShows asHow often
Lac/LacLaciano0.004% — 1 in 25,000
Lac/LckLaciano0.0053% — 1 in 18,751
Lac/LccLaciano0.0053% — 1 in 18,751
Lac/nLaciano0.076% — 1 in 1,316
Lck/LckBlack Laciano0.0053% — 1 in 18,751
Lck/LccBlack Laciano0.0053% — 1 in 18,751
Lck/nBlack Laciano0.0053% — 1 in 18,751
Lcc/LccColoured Laciano0.0053% — 1 in 18,751
n/nWild type99.888%

Its gene carrot

The file

common/src/main/resources/horsegenetics/genes/laciano.json — a data-driven gene, not a Java class. It is listed in the index.json beside it and registered by Genes' class initialiser at startup.

Keyhorsegenetics.laciano
Phasemagical — it adds signed colour in phase 3, after the pigment has resolved
Priority209 — where it sits in the one (priority, key) paint order
AllelesLac · Lck · Lcc · n
Varies per horse4 values drawn once off the expressing allele copy, so a foal that inherits the copy inherits the look
Built fromAXIS, PATCHES, SPOTS, STROKES, TOWARD

Why it is built this way

The black allele is the white one with the light taken out of it, and it sits one rung under white in the dominance series - so every combination that existed before it keeps the outcome it had, and only the pairs carrying Lck are new. The re-toning is a mapping rather than a repaint: every achromatic target moves into the dark end of the scale keeping its order and its spacing, and every SATURATED one is left alone, because that colour is the gene rather than its lightness.

What it paints

Each outcome, described the way the gene file describes it, and then the layers that draw it in the order they are painted. The prose is the part a reader checks a bake against; the list underneath is what the engine actually did.

Laciano

A spontaneous combination of tobiano and appaloosa, and mistakeable for either on its own. The white patches vary a great deal in size and number but are always gathered along the topline and thin out going down - solid over the crest, the withers, the back and the croup, breaking up over the ribs, and rarely anywhere near the belly. The legs are not white unless something else on the horse makes them so. Spotting sits over the hindquarter. The tail is banded - the raccoon tail - and every Laciano has one, which is the only reliable way to name the marking. Striped hooves are common and a white sclera is possible.

  1. white coming down from the back — PATCHES × AXIS, painted with TOWARD
  2. the appaloosa spotting over it — SPOTS × AXIS, painted with TOWARD
  3. the banded raccoon tail — STROKES, painted with TOWARD
  4. striped hooves — STROKES × AXIS, painted with TOWARD

Black Laciano

The same marking as the white form with the light taken out of it: a single near-black tone.

  1. white coming down from the back — PATCHES × AXIS, painted with TOWARD
  2. the appaloosa spotting over it — SPOTS × AXIS, painted with TOWARD
  3. the banded raccoon tail — STROKES, painted with TOWARD
  4. striped hooves — STROKES × AXIS, painted with TOWARD

Coloured Laciano

The same pattern in a colour the line carries rather than in white. Fully recessive: it takes two copies, and a single copy beside the white allele shows white. It never gives blue eyes, whatever the white form does.

  1. white coming down from the back, in colour — PATCHES × AXIS, painted with TOWARD
  2. the appaloosa spotting over it, in colour — SPOTS × AXIS, painted with TOWARD
  3. the banded raccoon tail, in colour — STROKES, painted with TOWARD
  4. striped hooves, in colour — STROKES × AXIS, painted with TOWARD

Wild type

No laciano.

Paints nothing.