Magical gene / fields and regions

Xuke

The head and all four legs taken over completely by dense coloured ticking - a roan rather than a spotting - with black hooves and often a little striping over the hindquarter.

What it can come out as

Outcome	Carrying
Xuke	`Xuk/Xuk` · `Xuk/n`
Wild type	`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 1,250 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 pair	Shows as	How often
`Xuk/Xuk`	Xuke	0.004% — 1 in 25,000
`Xuk/n`	Xuke	0.076% — 1 in 1,316
`n/n`	Wild type	99.92%

Its gene carrot

The file

common/src/main/resources/horsegenetics/genes/xuke.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.

Key	`horsegenetics.xuke`
Phase	magical — it adds signed colour in phase 3, after the pigment has resolved
Priority	256 — where it sits in the one `(priority, key)` paint order
Alleles	`Xuk` · `n`
Varies per horse	3 values drawn once off the expressing allele copy, so a foal that inherits the copy inherits the look
Built from	AXIS, SPECKLE, STROKES, TOWARD

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.

Xuke

Colour laid over the whole face from poll to muzzle and over every leg from the top to the hoof, dense enough to read as a roan rather than as a scatter of dots - the base coat is obscured, not spotted. The hooves stay black. Some horses also carry striping over the hindquarter, following the muscle, and it is likelier on a horse whose coat is one flat colour. Mane and tail are untouched.

dense ticking over the head — SPECKLE, painted with TOWARD
dense ticking down every leg, clear of the hoof — SPECKLE × AXIS, painted with TOWARD
striping over the hindquarter on some horses — STROKES × AXIS, painted with TOWARD
black hooves — AXIS, painted with TOWARD

Wild type

No ticking.

Paints nothing.