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This kind of transfer of an evolutionary adaptation to a new context is called "exaptation."

That's not an exaptation, where the same structures that let them climb trees are applied to the new setting, but actual evolutionary adaptations.

The brain regions responsible for gesture could have been taken over by those used in speech through an evolutionary process called exaptation, wherein parts of an organism take on different or completely novel roles.

This process of “exaptation” has now accelerated.

Ideological skepticism also animates Timur Si-Qin’s “Monument to Exaptation,” three tall, sleek panels with the word “Peace” spelled in neat white letters on each panel’s sides under a round symbol resembling a yin-yang sign.