The Agouti gene in responsible for putting the black points on a bay or buckskin horse. Which includes the black tipping on the ears, on the muzzle, the black on the lower legs and the black mane and tails.

Seal Brown horses were once thought to be part of the bay family, some believe now that they should be in their own catagory. They say brown is most likely recessive to the bay color and is created when the Agouti gene is on a black horse. At first it was thought that seal brown horses were actually black horse with the Mealy (Pangare' gene). Although research has proved otherwise.

Hope this helped.




PS

The Mealy/pangare' gene is what is responsible for causing the pale red/yellow areas on the "soft spots" of a horse. This includes the lower belly, flanks, elbow area, inside legs, muzzle, around eyes. It is what most of us call the "Mully" look. This is most often seen in mules and burrows, but can be found in any breed and just about any color.

This is sooo much fun Cheryl the answer to your question is YES!