Join Date: May 2009
Location: Winnipeg, Manitoba, Canada
Lilruffian - I think what you're confused about is the fact that black horses can carry red. A horse can either be red/red (chestnut), black/red (black) or black/black (homozygous black). That is why you will ALWAYS get a chestnut from breeding two together - they each only have a copy of red to give. But if a horse is black/red, it will always be a black horse carrying a copy of the red gene. So the mare would give a copy of her red/red (only option is red) and the stallion would give a copy of his black/red. If he gave black, the horse would have to be black. If he was homozygous black, he could only give black. But because the foal is palomino (chestnut base) he must carry a copy of red to give.
I don't know if I made that any clearer, I tried to step away from genetic marker abbreviations.
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