The many species of Galapagos finches were each adapted to eating different foods. This is an example of: A) Gene flow B) adaptive radiation C) Sympatric speciation D) Both a and b are correct E) A,B, and C are all correct Which of the following did NOT occur to Darwin on the voyage of the Beagle? A) He read Lyles Principles of Geology B) He observed living animals and similar fossils C) He read Malthus' Essays on population D) he witnessed an earthquake and the resulting fault E) All of the above DID occur on the voyage
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The many species of Galápagos finches are each adapted to eating different foods. This is the result of a. gene flow. b. adaptive radiation. c. sympatric speciation. d. genetic drift. e. All of these are correct
Madhur L.
Finches living on the Galapagos Islands were critical for Darwin to develop his ideas. What key observation did he make about the finches? A. The finches' beaks were colored differently, providing camouflage within their unique environment. B. The finches' feathers were colored differently, providing camouflage within their unique environment. C. The finches' beaks were uniquely adapted as tools for them to eat the food that was available to them. D. The finches' feathers were structurally different to allow them to fly at different heights and speeds, depending on their local environment.
Adi S.
Use adaptive radiation to explain the diversification of the finches Darwin observed in the Galapagos. a. The finches likely shared a common ancestor when they came to the island, but exhibited different traits. Each species of finch settled the island where its particular traits would be the most adaptive. b. The finches likely originated as one parent species, but over time mutations caused them to develop reproductive barriers and separate into different species. To reduce competition, the species then radiated out to inhabit different islands. c. The finches likely dispersed from one parent species, and natural selection based on different food sources in differing habitats led to adaptive changes, evidenced in the different beak shapes of the different species-each suited to a different food type. d. It is likely that a series of cataclysmic events caused an original finch species to diverge into the many finch species that inhabited the islands when Darwin observed them. The different species then radiated out to the different islands and adapted to the different conditions on each.
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