In the wild, the only tiger subspecies in the wild that have been observed to carry the white color is the Bengal tiger. Even all the white tigers that have been held captive are partly Bengal in subspecies. It is believed that the rare recessive gene that carries the white color comes from Bengal tigers only.
It is difficult to classify viruses as living organisms because they are not made of cells. They only become alive when they find a host i.e. a living cell to live in.ome algae are difficult to classify because they sometimes do not properly fit in one of the kingdoms since they may have characteristics from a few of the kingdoms.
and category III lesions [5, 7, 8]. Siegel et al. [1] documented interobserver variability in the distinction of Bosniak categories II and III le-sions, and this difï¬culty is undoubtedly one of the drawbacks of the system. Making the dis-tinction between categories II and III lesions is important because category II lesions are con-