Jorge wrote:"Foal with Overo Lethal White Syndrome Born
to a Registered Quarter Horse Mare" (Article) by Tamara Lightbody
http://www.ncbi.nlm.nih.gov/pmc/article ... 23p715.pdf
This article implies that this is unusual.. Its actually not all that unusual.. especilly since it was by a paint stallion.
There are quite sa few of olws pos AQHA (american) horses.. hell.. they even advertise them as such now the colour rules have changed