Evolution of Galapagos Finches

How many species of finches are found in the Galapagos Islands?

• Over 100,000

• 13

• 50

• 500

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Who are the biologists that have been studying the Galapagos finches for over 40 years?

• Charles Darwin

• Peter and Rosemary Grant

• Laureen Ratcliffe

• Sean B. Carroll

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What is the main focus of the researchers studying the Galapagos finches?

• Feather color

• Tail length

• Wing span

• Beak size and shape

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What event in 1977 led to a significant change in the medium ground finch population?

• Flood

• Tornado

• Drought

• Earthquake

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What trait made the greatest difference between life and death during the 1977 drought?

• Wing size

• Beak size

• Feather color

• Tail length

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What caused the average beak depth of the medium ground finches to increase by more than 4%?

• Human intervention

• Genetic mutation

• Natural selection

• Climate change

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What event in 1983 led to a change in the vegetation on the island of Daphne Major?

• Tornado

• Flood

• El Nino

• Drought

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What caused the medium ground finches to have difficulty picking up the more abundant food after the 1983 event?

• Medium seeds

• Berries

• Small seeds

• Large seeds

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What role do songs play in keeping different species of finches from mating?

• They confuse mates

• They repel mates

• They attract mates

• They have no role

What did the male finches respond to when the researchers played back the cactus finch song?

• They responded to the medium ground finch song

• They responded to the cactus finch song

• They did not respond to any song

• They responded to the woodpecker finch song

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