Which pattern includes a dorsal stripe down the back and leg barring?

The pattern that includes a dorsal stripe and leg barring is known as primitive markings. This pattern is often seen in certain breeds of horses, such as the Dun and Buckskin, and typically features distinct markings that are reminiscent of wild ancestors. The dorsal stripe is a line that runs along the spine, while leg barring refers to the darker stripes that appear on the legs.

Primitive markings serve as an important identification feature, indicating a horse's heritage and characteristics. They are associated with horses that exhibit traditional coloration and patterns, often linking back to natural traits found in wild horse populations. The presence of a dorsal stripe and leg barring emphasizes the horse's strong genetic links to these primitive traits.

In contrast, roan refers to a coat color pattern where white hairs are mixed with a base color, without specific markings like those described. Chestnut is a basic coat color and does not indicate any specific marking pattern, while sabinos are characterized by white markings that can vary significantly, but they do not include the dorsal stripe or leg barring associated with primitive markings.