Certain Female Lizards Choose Sex of Offspring

Publication: National Geographic News   Date: August 15, 2001   View Article

Male lizards of a species known as southern water skinks, which live high in the mountains of southeastern Australia, better hope the threat of global warming is a farce. If Earth does warm up, they may find themselves left with no females to mate with, and the species pushed to extinction.

The concern arises because scientists have found that females of the lizard species Eulamprus tympanum control the sex of offspring by controlling their own adult body temperature.

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