Monday, 4 November, 2002, 15:10 GMTMorocco's miracle mule 'confirmed' The foal is about one quarter horse DNA tests have confirmed that a Moroccan mule did give birth to a foal. Veterinary experts say the foal's father was a donkey and its mother a true mule. The foal inherited a mixture of horse and donkey chromosomes via the mother's ovum Gigi Kay, Society for the Protection of Animals of North Africa The discovery defies scientific wisdom because mules are supposed to be sterile. Mules are hybrids - a cross between two species - in this case, the horse and the donkey....