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This horse is het brown as well, but hom sty and het dp. The shoulders of your horse are darker. Not too sure how sty effects het brown buckskins...I'd say that maybe, MAYBE your mare has a copy of dp, but not too sure...


3 Tempo of Doubt

Yeah, brown is weird! Basically, I think of it this way:

Black, or Extension, or E/e, is what is responsible for whether horses can have black hairs. If they're ee, they are all red. If they have E, the horse is technically black all over.

But, then you have Agouti, or bay, which "pushes" the black pigment away to reveal the red underneath.

Wild Bay, A+, is the strongest Agouti and it pushes the black all the way to the ankles/fetlocks. It's super strong.

Bay, A, isn't quite as strong but it's still a solidly dominant gene. It can only push the black down to the knees/hocks.

Brown, At, is incompletely dominant in the game. When brown is heterozygous, it's really really weak and really only pushes the black away from the belly. But when it's homozygous, it can gang up on the black pigment and push it away nearly as well as Regular Bay can.

Other genes in the game with "incomplete" dominance effects are things like Cream/pearl, PATN1 for appies, and Splash 1. All 3 of these genes are "stronger" when homozygous, but still have some effect when heterozygous.

Sooty and dp are always best for getting darker colours. However in wild bay, dp tends to make them bright red, like tomato cause!

Het brown is always darker than hom brown but, as you see with my Rhythm of Four mare (a RS), three darkening genes are enough to make them darkish.

I'll send you a pm about that mare ^^