Albinism despite its lack of chlorophyll it may grow to substantial size as a parasite, usually on the base of the (normal) redwood tree from which it first grew. Only about sixty examples of albino redwoods are known. Additionally, an even smaller number of "chimeric" redwood trees have both normal and white needles. Albinism has frequently occurred in progeny of Black Tartarian, Bing and Hedelfingen varieties of sweet cherry. The Albino Squirrel Preservation Society was founded at the University of Texas at Austin in 2001. Members of the society at the University of North Texas petitioned for an election to name
Bada' of bada’ plays a central role in the Twelver way of expecting the Mahdi. According to Twelvers, by having faith in bada’, people would keep themselves ready all the time to receive the Mahdi. However, a person who has no faith in the alteration of the signs (due to bada’) and thinks of the reappearance of the Mahdi after the sighting of the signs is actually waiting primarily for the sighting of the signs and then for the Mahdi. Such an individual may deny the Mahdi if he reappears without the signs being fulfilled, as Abu Ubaida al-Hadhaa narrates: Bada'