Join Date: Aug 2010
Location: Perth, Western Australia
• Horses: 0
Depends entirely on the genes that the bay is carrying (one copy of agouti or two? one copy of black or two?) and what the grey is hiding under it's blanket of grey (agouti? black? red? cream? anything could be under there). Then you have to consider if the grey has one copy of grey or two copies.
Regardless, assuming one copy of the grey gene, 50% of the foals would be grey.
Mods, grant me the serenity to see the opinions I cannot change, courage to change the ones that should change, and the wisdom to spot the trolls.