Originally Posted by kywalkers2012
If the sire has been tested negative for LWO then there's no need to test the mare. Since the sire is negative for it, there is no way that the foal will be a Lethal White Overo. I seriously doubt that the mare is even a carrier of frame. Unless the solid parent was a frame carrier and it passed the frame down to the mare in question. But, since neither are carrying agouti, the foal can't be either brown or bay based. It will either be black, sorrel, grullo or red dun solid with a greater percentage of the foal being tobiano, since both parents are.
You should always test ALL your breeding stock in a breed with frame. The stallion test could have been mixed up at the lab or some other such stuff (not suggesting this is the case here, just a "what if" scenario).
Also, if this mare was tested frame and came back negative, I would be very much surprised. She CLEARLY has the phenotype, and with that solid nose, I doubt it is being caused by splash.