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White Tiger

Evolution of a White Tiger

chelsea heyn

on 21 October 2012

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Transcript of White Tiger

Chelsea Heyn
White Tiger Habitat: White tigers can be found in different parts of the world. They are the inhabitants of tundras, south Malaya and Indonesia. White tigers are commonly found in the coniferous forests, tropical rain forests, and mangroves. -Panthera Tigris- White Tiger Wild Boar Bunny Berry Bush Grass Trees Black bears Deer Adaptation: Physical or behavioral characteristics that are developed to let an animal suit its environment. Some adaptations that help the White tiger suit its environment better are:
Stripes help blend into trees and grass.
Strong jaws and teeth help catch and eat prey.
Coat protects from the winter and summer weather. Classification Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Genus: Panthera
Species: P. Tigris Evolutionary History: The ONLY way to produce a tiger with a white coat is through inbreeding brother to sister or father to daughter; generation after generation after generation. The kind of severe inbreeding that is required to produce the mutation of a white coat also causes a number of other defects in these big cats.
The white gene is a double recessive gene one caused mostly by interbreeding - in a natural mating, there is only a 1 in 10,000 chance that the tiger will be white- Convergent Evolution: Convergent evolution describes the acquisition of the same biological trait in unrelated lineages. Cladogram: The cat like form has evolved at least three times:
Marsupial tigers
Neofelids Graph of White Tiger Extinction: Bibliography: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0025483
http://wanderinweeta.blogspot.com/2009/11/doing-crawl-2010.html White Tiger Research There are only around 200 of the white tigers left in the world. It is estimated that only one in 10,000 births can result in the birth of a white tiger naturally. The same gene that causes the white coat causes the optic nerve to be wired to the wrong side of the brain, thus all white tigers are cross eyed, even if their eyes look normal. They also often suffer from club feet, cleft palates, spinal deformities and defective organs. The American Zoological Association (AZA) recognizes that these cats should not be bred and admonishes AZA accredited zoos not to breed any more of them. The leader of the tiger Species Survival Plan states openly that the only reason people breed white tigers is because people will pay to see white tigers. Poachers have eliminated the presence of White Tigers in the wild. It has been over 50 years since a White Tiger has been seen in the wild. W H I T E T I G E R
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