How did Darwin explain the data about the finches on the various Galapagos Islands? Group of answer choices 1: they must have all evolved on one island and then spread to others 2: they were not always finches, but evolved from some other birds 3: a bird with a long narrow beak probably ate seeds, which were hard to crack 4: they had evolved different beaks because of the different food sources on the islands

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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How did Darwin explain the data about the finches on the various Galapagos Islands? Group of answer choices 1: they must have all evolved on one island and then spread to others 2: they were not always finches, but evolved from some other birds 3: a bird with a long narrow beak probably ate seeds, which were hard to crack 4: they had evolved different beaks because of the different food sources on the islands
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Darwin spotted a variety of finches on the Galapagos Islands, with a different species on each island. He discovered that depending on the food available on the island, each finch species had a different style of beak. Finches that ate huge nuts had powerful beaks to crack them apart. Finches with beaks for cracking nuts and seeds ate little nuts and seeds. Fruit-eating finches had parrot-like beaks, whereas insect-eating finches had narrow, probing beaks, according to Darwin.

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