Magical gene / spots and rings

Lasertae

Two to five small eclipses on each shoulder - a pale halo closing round a circle of bare coat, sharp inside and fading away to nothing outside.

What it can come out as

Outcome	Carrying
Lasertae	`Lst/Lst` · `Lst/Lsc` · `Lst/n`
Coloured Lasertae	`Lsc/Lsc`
Wild type	`Lsc/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 pair	Shows as	How often
`Lst/Lst`	Lasertae	0.004% — 1 in 25,000
`Lst/Lsc`	Lasertae	0.016% — 1 in 6,250
`Lst/n`	Lasertae	0.076% — 1 in 1,316
`Lsc/Lsc`	Coloured Lasertae	0.016% — 1 in 6,250
`n/n`	Wild type	99.888%

Its gene carrot

The file

common/src/main/resources/horsegenetics/genes/lasertae.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.lasertae`
Phase	magical — it adds signed colour in phase 3, after the pigment has resolved
Priority	308 — where it sits in the one `(priority, key)` paint order
Alleles	`Lst` · `Lsc` · `n`
Varies per horse	4 values drawn once off the expressing allele copy, so a foal that inherits the copy inherits the look
Built from	AXIS, SPOTS, 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.

Lasertae

Two to five small eclipses on each shoulder and nowhere else on the horse - not the neck, not the barrel behind the scapula, not the legs. Each is a pale halo closing round a circle of the horse's own coat: sharp on the inside against that circle, and with no outer edge at all on the other side, running out over two or three hairs' breadth into the coat. That asymmetry is the whole marking - it is what makes a lasertae read as a light behind a hole rather than as a ring drawn on. Their long axis lies roughly nose to tail.

the halo, closing round a circle of bare coat — AXIS × AXIS × SPOTS × SPOTS inverted, painted with TOWARD

Coloured Lasertae

The same marking 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.

the halo, closing round a circle of bare coat, in colour — AXIS × AXIS × SPOTS × SPOTS inverted, painted with TOWARD

Wild type

No lasertae.

Paints nothing.