A change in a single amino acid (A477V) in one pigmentation-related gene (SLC45A2) causes some tigers to have white fur with dark or sepia brown stripes, scientists from Peking University, Beijing,
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/white-bengal-tiger-enigma-solved
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tiger
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/scientists
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/genetic-resources