* Dappling is a pattern, not a base color: Dappling is a pattern of light and dark patches on a horse's coat. It doesn't change the horse's underlying base color (like bay, chestnut, or black).
* Genetics are complex: Horse coat color is determined by multiple genes, each with different variations. A dapple grey horse could have a bay, chestnut, or even black base color under its dappling.
* Sorrel can be a "masking" color: A sorrel horse has a chestnut base coat with the "extension" gene that hides the black pigment, making it appear red.
Here are some possibilities based on the horse's base color:
* If the dapple grey has a bay base color: The foal could be bay, sorrel, or even chestnut (if the dapple grey carries the recessive chestnut gene).
* If the dapple grey has a chestnut base color: The foal will likely be sorrel or chestnut.
* If the dapple grey has a black base color: The foal could be bay, black, or brown (if the dapple grey carries the "agouti" gene that dilutes black pigment).
In short, the foal's color will depend on the specific combination of genes inherited from both parents. It's a bit of a genetic lottery!