View a video lecture on exaptations, preadaptations and other variations on the notion of adaptation. Next, explore some websites that provide more detail on adaptation. Finally, complete an exercise in which you classify specific traits as adaptations or exaptations.

Video: Adaptation and Exaptation

Classify the specific traits below as adaptations or exaptations

1			The penguin's wings <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0767424263/322930/penguin.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (8.0K)</a> PhotoLink/Getty Images
			A)	adaptations
			B)	exaptations
2			The cheetah's legs <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0767424263/322930/cheetah.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (23.0K)</a> © Digital Vision
			A)	adaptations
			B)	exaptations
3			The rhea's wings <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0767424263/322930/rhea.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (35.0K)</a> PhotoLink/Getty Images
			A)	adaptations
			B)	exaptations
4			The mole's front limbs <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0767424263/322930/Molerat.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (32.0K)</a> © image100/PunchStock
			A)	adaptations
			B)	exaptations
5			The sea lion's front limbs <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0767424263/322930/Sealion.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (30.0K)</a> © Ismael Perez Orozco/ Ismael Design
			A)	adaptations
			B)	exaptations