Join Date: Aug 2010
Location: Perth, Western Australia
• Horses: 0
There can be homozygous roan. It used to be thought that roan was lethal when doubled up, and that the fetus would abort, but that has been disproved since the gene causing it was isolated. Roan is dominant, so it can't 'hide' for a few generations or anything like that.
Mods, grant me the serenity to see the opinions I cannot change, courage to change the ones that should change, and the wisdom to spot the trolls.