* Buckskin: A buckskin horse has a base coat of yellow (or sometimes reddish) with a black mane and tail. They carry the "dun" gene, which gives them the yellow coat and dark points.
* Blue Roan: A blue roan horse has a base coat color (can be any color) mixed with white hairs, resulting in a "roan" pattern. The white hairs are typically more prominent on the neck, shoulders, and rump.
Possible Foal Colors:
* Roan: The foal could inherit the roan gene from the mare, resulting in a roan coat with the buckskin base color. This could be a blue roan buckskin, bay roan, or red roan (depending on the base color).
* Buckskin: The foal could inherit the buckskin gene from the stud and not the roan gene from the mare, resulting in a buckskin foal.
* Other: There's a possibility of other color combinations depending on the specific genes carried by the parents. The mare could carry other color genes that might influence the foal's color.
Factors Affecting Foal Color:
* Base coat color: The mare's underlying base coat color will influence the foal's color.
* Other genes: Both parents may carry other genes that could affect the foal's color, such as the "cream" gene or the "silver" gene.
In short, the foal could be a roan with a buckskin base, a buckskin, or other colors depending on the combination of genes inherited from both parents.