Which color of horse results from both the chestnut gene dilution and a cream gene?

The horse color that results from both the chestnut gene dilution and the cream gene is palomino. This color occurs specifically when a chestnut horse inherits one copy of the cream gene, leading to a dilution of its red pigment. As a result, the chestnut color lightens to produce the characteristic golden coat associated with palominos.

Palominos are easily identifiable due to their shiny golden coats, which can range in shade from light, almost cream-colored, to a deeper gold. The presence of one cream gene on a chestnut base is what creates this distinct coloration. In contrast, other options, such as chestnut (which is the unaltered red coat color), piebald (which describes a horse with large patches of white and dark color), and bay (characterized by a brown coat with black points), do not involve this particular combination of genetic factors leading to the palomino color.