Originally Posted by CharliGirl
If Scotch isn't a roan, why does he have white hairs everywhere? Is a sabino a type of paint marking? I've never heard of sabino before...
Sabino is an Overo PINTO pattern. (Paint is a breed... Pinto is the coloration) It can occur within any breed, though some definitely show a stronger tendancy of it. In it most minimal form you may only see occasional white hairs on the body - or a star/sock.... in it's most extreme form you'll have a white horse.
Scotch looks like a pretty typical Sabino to me, between his white markings and roaning over the whole body... his sire is one as well... possibly one or both of them also carry a gene called Rabicano - which is very similar, though usually displays a "coon tail" (a more heavily roaned stripe above the tail)
True Roan is a totally separate gene, and it requires at least one parent to carry the gene, and pass it on. In true roans only their body will get white hairs - their head, legs, mane and tail stay solid. The roaning will change seasonally (the horse will appear more roan during some seasons and more solid during others)