About thirteen different species of Galapagos finches were each adapted to eating different food. This is an example of ?
A
Gene flow
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B
Adaptive radiation
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C
Sympatric speciation
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D
All of the above
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Solution
The correct option is B Adaptive radiation Darwin's finches were all evolved from a single variety of bird due to the availability of different variety of food. In order to survive themselves, the birds developed various modifications in their beaks from a single original beak type which means adaptive radiation or adaptation with response to the changing environmental conditions.