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.
The name is based on hepato (liver) tropic (replicates and causes infection in the liver) and DNA virus (its nucleic acid). The Hepadna virus family has the smallest genome of all replication competent animal DNA viruses. The single most important member of the family is Hepatitis B virus (HBV) .he hepadna family of viruses consists of five viruses: One human virus, hepatitis B, and four animal viruses: woodchuck hepatitis virus, ground squirrel hepatitis virus, Peking duck hepatitis virus, and other avian hepatitis viruses.