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08-26-2011, 11:32 AM #10
mainbutter

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Snakes don't ascribe to the XX/XY system. They use the ZZ/ZW system, where males are ZZ and females are ZW, kind of opposite of humans.

Last edited by mainbutter; 08-26-2011 at 11:33 AM.
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Carlene16 (08-26-2011)