Which of the following events best illustrates an adaptive radiation?

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A population of a cricket species takes up residence in a cave. Over many generations, the cave crickets eventually lose their eyes, like many other cave-dwelling animals.

A fishless lake is colonized by a single fish species, which over a few thousand years gives rise to several species, each with a series of unique feeding adaptations.

A small group of tree-dwelling lizards of a single species migrates to an uninhabited, treeless island and adapts to use the open grassland habitat.

A colonizing species of fruit fly takes up residence on a new continent and displaces two closely related native species.

 

asked Dec 28, 2012 in Biology by anonymous
    

1 Answer

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A fishless lake is colonized by a single fish species, which over a few thousand years gives rise to several species, each with a series of unique feeding adaptations.

 

answered Dec 28, 2012 by anonymous

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