White tigers are not a separate subspecies of tiger, and they are not albinos, they are just white-colored Bengal tigers. White tigers are only born when two tigers that both carry the unusual gene for white coloring mate - their color is caused by a double recessive allele. A Bengal tiger with two normal alleles or one normal and one white allele is colored orange. Only a double dose of the mutant allele results in white tigers.
White tigers have blue eyes, pink noses, and creamy white fur with chocolate colored stripes.
The only wild white tigers ever reported are white-colored Bengal tigers found in India. In captivity, however there are some white tigers that are hybrids - a mix of different subspecies. White Bengal tigers are sometimes mated with tigers from other subspecies, producing white hybrid tigers. Tigers are not found in Africa because they never evolved there. Modern day tigers are all descended from tigers that originally lived in south central China.