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http://en.wikipedia.org/wiki/Sexual_dimorphism
Sexual dimorphism is the systematic difference in form between individuals of different sex in the same species. Examples include colour (specifically referred to as sexual dichromatism), size, and the presence or absence of parts of the body used in courtship displays or fights, such as ornamental feathers, horns, antlers or tusks.
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Fidel Priestonn,
39 Bartok Bela korut Szombathely,
Szombathely 9700
Hungary
Last updated: October 14, 2010