Sezzas wrote:I've never heard that before >.> Where is information on this?
Cause like, as far as I'm concerned, Dominant White and Overo are two completely different things.
The lethal whites that survive are extremely rare (because they are not lethals). Those very few that do are called Living Lethals. This however is a misuse of terms since lethal is, well, lethal. This foal had a high chance of becoming a lethal but didn't, It had a low chance of becoming a Dominate white, and did (Ww). Dominant whites and lethals fall into the same category of "Extreme Whites". Extremes typically come from mostly marked horses such as Overos or Tobianos. In simple terms, there markings (the white) have engulf the other colours. This is why we see Extremes in breeds like Paints or Appaloosas. Are Lethals and Dominant Extremes? Yes and no, it's like the question, is a square a rectangle and is a rectangle a square? Extremes is a colour term while Lethals and Doms are genetic terms. A horse can be a dom and an extreme but a extreme does not always have to be a dom. Now, how does all of this play into your question? This foal is a extreme of the Tovero, but through genetics he/she became a dom (since both parents have a white gene). Yes, both parents are Tovero but that does not make the foal a direct tovero (spitting image of the parents). Some things change.
Edit; I forgot to say that both Dom and lethals are mutations. Extremes are not mutations all the time. Also Lethals and Doms are not the same