Assertion: adaptation | /r/CapableOf | arise through natural selection
Facets:
Source sentences:
text: In sum, Gould (1991) proposed two types of func- tional exaptations–adaptations that initially arose through natural selection and were subsequently co-opted for another function (co-opted adaptations) and features that did not arise as adaptations through natural selection but rather as side effects of adaptive processes and that have been co-opted for a biological function (co-opted spandrels).