Originally Posted by JustAwesome
I asked someone who has more experience with this type of thing..
Tobiano is a separate gene and doesnt have the potential genetic problems that overo/OLW does...
BUT tobianos (and sollids) CAN carry the 'frame'/overo/OLW gene as well and may not show it
Keep in mind that the term "overo" itself is 3 different genes. Splash and sabino are harmless to breed together, so not all horses labeled overo are going to cause lethal white foals. This is only frame, which, unfortunately, is notorious for minimal expression, meaning that every horse that could possibly carry the gene should be tested when considering breeding.