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' were directly named as the successors to the Imāmate. As well, even though Shaykh Tusi cited some of the traditions, he himself along with Shaykh Saduq were both opposed to the idea of Bada' with regards to Imāmate, arguing that if matters as important as Imāmate were subject to change, then the fundamentals of belief should also be subject to change. Muhammad Baqir Majlisi has also offered explanations of the concept of bada'. In some traditions attributed to Imām Muhammad al-Baqir the number of the years which had to elapse before the emergence of the Mahdi was specified. For example,