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I think I might have worded it wrong.

If I have a stallion that is splash with no frame, and I breed it to a mare with splash and frame, the foal won't die because it's not possible to have a foal with two Olw because the sire doesn't have Olw.

But say that sire does have Olw, and the mare has Olw, there's a chance the foal could die cause it could be homozygous for Olw.

But if you breed two horses that don't have any Olw, it doesn't die unless those horses have other lethal genes like KITw or KIT10, etc.

Here's an example of my two horses:


ES Jamaica Me Crazy


ES Red Zephyr

The mare (top) is homo for Sps and also has Olw. The sire is hetero for Sps but has Olw as well, that's why they both have "Splash Frame" in their name. If I breed these horses together the foal could be lethal white.


ES Up In Flames

But say I bred her to this one instead, who has homo Sps but NO Olw, the foal wouldn't die, correct? All my stallions are up for breeding and I just want to make sure that people are cautious when breeding to my horses with Olw and W and other lethal genes. :)

Gotcha, so I should warn people about the horses that have frame (Olw) not horses that have splash or sabino without Olw?