Originally Posted by howrsegirl123
What would you get if you bred a bay to a grey?
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It would depend on what the grey horse's base color is. Grey horses are born whatever color (black, chestnut, bay, palomino, appaloosa, pinto, etc.) and then get lighter as they age.
Breeding a grey to any color has a high possibility of producing a foal that will end up grey if it is heterozygous. If the grey is homozygous (GG) then the foal will
end up grey.