What a roan horse is one that has patches of white and patches of reddish brown hair because the genes for the two hair colors are equally expressed of?

A roan horse is characterized by a mix of white and colored hairs, typically presenting as a combination of white and reddish-brown hair. This unique coat pattern occurs due to the equal expression of genes responsible for both colors, resulting in a striking and distinctive appearance. Roan can occur in various base colors, with the most common being red roan (reddish-brown and white) and blue roan (black and white). The roan pattern can change with age, as the horse's coat may become more mixed over time.